Mingi gave 15 cherry tomatoes each to 20 classmates. If the remaining number of cherry tomatoes is 6, how many cherry tomatoes did Mingi have at first?
15 20 [OP_MUL] 6 [OP_ADD]
var_a = 15
var_b = 20
var_c = var_a * var_b
var_d = 6
var_e = var_c + var_d
print(int(var_e))