#region いつもの
#pragma warning disable
using System;
using System.Collections.Generic;
using System.Linq;
using IEnumerable = System.Collections.IEnumerable;
using IEnumerator = System.Collections.IEnumerator;
using BitArray = System.Collections.BitArray;
using BigInteger = System.Numerics.BigInteger;
using TextReader = System.IO.TextReader;
using static AtCoderProject.Global;

namespace AtCoderProject
{
    static class Global
    {
        private class ComparerReverseImpl<T> : Comparer<T> where T : IComparable<T> { public override int Compare(T y, T x) => x.CompareTo(y); public override bool Equals(object obj) => obj != null && GetType() == obj.GetType(); public override int GetHashCode() => GetType().GetHashCode(); }
        public static IComparer<T> ComparerReverse<T>() where T : IComparable<T> => new ComparerReverseImpl<T>();
        public static BigInteger ParseBigInteger(string s)
        {
            // MonoのBigInteger.Parseが遅いので自前実装
            var res = BigInteger.Zero;
            var splited = new string[(s.Length + 7) / 8];
            for (int i = 0; i < splited.Length - 1; i++)
            {
                splited[i] = s.Substring(8 * i, 8);
            }
            splited[splited.Length - 1] = s.Substring(8 * (splited.Length - 1));
            foreach (var sp in splited)
            {
                res *= (int)Math.Pow(10, sp.Length);
                res += int.Parse(sp);
            }
            return res;
        }
        public static string AllLines<T>(IEnumerable<T> source) => string.Join("\n", source);
        public static string AllJoin<T>(IEnumerable<T> source) => string.Join(" ", source);
    }
    static class Ext
    {
        public static Tuple<TSource, TMax> MaxBy<TSource, TMax>
            (this IEnumerable<TSource> source, Func<TSource, TMax> maxBySelector)
            where TMax : IComparable<TMax>
        {
            TMax max;
            TSource maxByItem;

            var e = source.GetEnumerator();
            e.MoveNext();
            maxByItem = e.Current;
            max = maxBySelector(maxByItem);
            while (e.MoveNext())
            {
                var item = e.Current;
                var next = maxBySelector(item);
                if (max.CompareTo(next) < 0)
                {
                    max = next;
                    maxByItem = item;
                }
            }
            return Tuple.Create(maxByItem, max);
        }
        public static Tuple<TSource, TMin> MinBy<TSource, TMin>
            (this IEnumerable<TSource> source, Func<TSource, TMin> minBySelector)
            where TMin : IComparable<TMin>
        {
            TMin min;
            TSource minByItem;

            var e = source.GetEnumerator();
            e.MoveNext();
            minByItem = e.Current;
            min = minBySelector(minByItem);
            while (e.MoveNext())
            {
                var item = e.Current;
                var next = minBySelector(item);
                if (min.CompareTo(next) > 0)
                {
                    min = next;
                    minByItem = item;
                }
            }
            return Tuple.Create(minByItem, min);
        }
        public static IComparer<T> Reverse<T>(this IComparer<T> comparer) => Comparer<T>.Create((x, y) => comparer.Compare(y, x));
        public static Dictionary<TKey, int> GroupCount<TSource, TKey>(this IEnumerable<TSource> source, Func<TSource, TKey> keySelector) => source.GroupBy(keySelector).ToDictionary(g => g.Key, g => g.Count());
        public static Dictionary<TKey, int> GroupCount<TKey>(this IEnumerable<TKey> source) => source.GroupCount(i => i);
    }
    public class ConsoleReader { private string[] ReadLineSplit() => textReader.ReadLine().Split(Array.Empty<char>(), StringSplitOptions.RemoveEmptyEntries); private string[] line = Array.Empty<string>(); private int linePosition; private TextReader textReader; public ConsoleReader(TextReader tr) { textReader = tr; } public int Int => int.Parse(String); public int Int0 => Int - 1; public long Long => long.Parse(String); public double Double => double.Parse(String); public string String { get { if (linePosition >= line.Length) { linePosition = 0; line = ReadLineSplit(); } return line[linePosition++]; } } public class SplitLine { private string[] splited; public SplitLine(ConsoleReader cr) { splited = cr.ReadLineSplit(); cr.line = Array.Empty<string>(); } public int[] Int => String.Select(x => int.Parse(x)).ToArray(); public int[] Int0 => String.Select(x => int.Parse(x) - 1).ToArray(); public long[] Long => String.Select(x => long.Parse(x)).ToArray(); public double[] Double => String.Select(x => double.Parse(x)).ToArray(); public string[] String => splited; } public SplitLine Split => new SplitLine(this); public class RepeatReader : IEnumerable<ConsoleReader> { ConsoleReader cr; int count; public RepeatReader(ConsoleReader cr, int count) { this.cr = cr; this.count = count; } public IEnumerator<ConsoleReader> GetEnumerator() => Enumerable.Repeat(cr, count).GetEnumerator(); System.Collections.IEnumerator System.Collections.IEnumerable.GetEnumerator() => GetEnumerator(); public IEnumerable<string> String => this.Select(cr => cr.String); public IEnumerable<int> Int => this.Select(cr => cr.Int); public IEnumerable<int> Int0 => this.Select(cr => cr.Int - 1); public IEnumerable<long> Long => this.Select(cr => cr.Long); public IEnumerable<double> Double => this.Select(cr => cr.Double); } public RepeatReader Repeat(int count) => new RepeatReader(this, count); }
    public class Program
    {
        [System.Diagnostics.DebuggerBrowsable(System.Diagnostics.DebuggerBrowsableState.Never)] private ConsoleReader cr;
        public Program(ConsoleReader consoleReader) { this.cr = consoleReader; }
        static void Main() => Console.WriteLine(new Program(new ConsoleReader(Console.In)).Calc());

        #endregion
        public object Calc()
        {
            var L = cr.Long;
            var A = cr.Long;
            var B = cr.Long;
            Mod.mod = cr.Long;
            var s0 = A;
            var sL = A + B * L;

            var mat = new Mod[3, 3]{
                    { 1,0,0 },
                    { 0,1,0 },
                    { 0,0,1 },
                };
            for (int i = 1; i <= 18; i++)
            {
                var from = Math.Max(0, (pows[i - 1] - A + B - 1) / B);
                var to = Math.Min(L, (pows[i] - A + B - 1) / B);

                var p = to - from;
                if (p <= 0) continue;

                var current = new Mod(A + from * B, true);

                var ps = Pow(new Mod[3, 3]{
                    { new Mod(pows[i],true),1,0 },
                    { 0,1,new Mod(B,true) },
                    { 0,0,1 },
                }, p);
                mat = Mul(ps, mat);
            }

            return mat[0, 1] * new Mod(A, true) + mat[0, 2];
        }

        long[] pows = { 1, 10, 100, 1000, 10000, 100000, 1000000, 10000000, 100000000, 1000000000, 10000000000, 100000000000, 1000000000000, 10000000000000, 100000000000000, 1000000000000000, 10000000000000000, 100000000000000000, 1000000000000000000 };

        const int K = 3;

        Mod Pow10(BigInteger y)
        {
            Mod res = 1;
            Mod x = 10;
            for (; y > 0; y >>= 1)
            {
                if ((y & 1) == 1) res *= x;
                x *= x;
            }
            return res;
        }
        Mod[,] Pow(Mod[,] mat, long y)
        {
            Mod[,] res = new Mod[K, K];
            for (var i = 0; i < K; i++)
                res[i, i] = 1;
            for (; y > 0; y >>= 1)
            {
                if ((y & 1) == 1) res = Mul(res, mat);
                mat = Mul(mat, mat);
            }
            return res;
        }

        Mod[,] Mul(Mod[,] l, Mod[,] r)
        {
            Mod[,] res = new Mod[K, K];
            for (var i = 0; i < K; i++)
                for (var j = 0; j < K; j++)
                    for (var k = 0; k < K; k++)
                        res[i, j] += l[i, k] * r[k, j];
            return res;
        }


        struct Mod : IEquatable<Mod>
        {
            public static long mod = 1000000007;
            public readonly long val;
            public Mod(long val, bool isValid) : this(isValid ? val % mod : val) { }
            public Mod(long val) { this.val = val; }
            public override bool Equals(object obj) => (obj is Mod) ? this == ((Mod)obj) : false;
            public bool Equals(Mod obj) => this == obj;
            public override int GetHashCode() => val.GetHashCode();
            public override string ToString() => val.ToString();
            public static implicit operator Mod(long x) => new Mod(x);
            public static Mod operator +(Mod x, Mod y) => (x.val + y.val) % mod;
            public static Mod operator -(Mod x, Mod y) => x.val >= y.val ? (x.val - y.val) % mod : (x.val - y.val) % mod + mod;
            public static Mod operator *(Mod x, Mod y) => (x.val * y.val) % mod;
            public static bool operator ==(Mod x, Mod y) => x.val == y.val;
            public static bool operator !=(Mod x, Mod y) => x.val != y.val;
            public static Mod Pow(Mod x, long y)
            {
                Mod res = 1;
                for (; y > 0; y >>= 1)
                {
                    if ((y & 1) == 1) res *= x;
                    x *= x;
                }
                return res;
            }
        }

    }

}


Measured memory_bytes: 13396