If you divide 66 strawberries and 49 grapes equally into a bag, there will be 6 strawberries left and 4 grapes left. Find how many bags there are.
49 4 [OP_SUB] 66 6 [OP_SUB] [OP_GCD]
var_a = 49
var_b = 4
var_c = var_a - var_b
var_d = 66
var_e = 6
var_f = var_d - var_e
var_g = math.gcd(int(var_f), int(var_c))
print(int(var_g))