You are about to buy apples and pears, and give out 4 apples and 3 pears, and there should be no leftovers. If you buy the same number of apples and pears, find the minimum number you need to buy.
3 4 [OP_LCM]
var_a = 3
var_b = 4
var_c = var_b * var_a / math.gcd(int(var_b), int(var_a))
print(int(var_c))