Problem: what is the sum of all 5 digit numbers which can be formed with the digits 0 , 1,2 , 3,4 without repetation ?
Rationale: "10 ( 11111 ) * 4 ! - 10 ( 1111 ) 3 ! = 2599980 answer : a"
annotated_formula: multiply(divide(add(divide(subtract(subtract(const_1000, 5), add(add(multiply(multiply(5, 5), const_10), multiply(5, 5)), 5)), 1,2), const_1), 0), add(subtract(const_1000, 5), add(add(multiply(multiply(5, 5), const_10), multiply(5, 5)), 5)))