There is a park in the shape of a square whose side is 40 meters (m). If Taehyung ran one lap along the circumference of this park, how many meters (m) did Taehyung run?
40 4 [OP_MUL]
var_a = 40
var_b = 4
var_c = var_a * var_b
print(int(var_c))