TASK DEFINITION: The task is to generate the correct answer for a given math problem.
PROBLEM: Problem: if 5 a = 3125 , then the value of 5 ( a - 3 ) is :

SOLUTION: 25

PROBLEM: Problem: how many liters of a 40 % iodine solution need to be mixed with 35 liters of a 20 % iodine solution to create a 32 % iodine solution ?

SOLUTION: 102

PROBLEM: Problem: what is the units digit of 32 ! + 50 ! + 4 ! + 4 ! ?

SOLUTION: