Problem: in a zoo , the ratio of the number of cheetahs to the number 4 then what is the increase in the number of pandas ?
Rationale: one short cut to solve the problem is c : p = 1 : 3 c increased to 5 = > 1 : 3 = 5 : x = > x = 15 = > p increased by 12 b is the answer
annotated_formula: subtract(multiply(4, 4), const_4)