The average of Cheolsu's weight, the mother's weight, and the father's weight is equal to the mother's weight. If Cheolsu's weight is 2/3 of his mother's weight and his father's weight is 72 kilograms (kg), what is Cheolsu's weight?
72 2 1 2/3 [OP_DIV] [OP_MUL] 1 [OP_SUB] [OP_DIV]
var_a = 72
var_b = 2
var_c = 1
var_d = 0.6666666666666666
var_e = var_c / var_d
var_f = var_b * var_e
var_g = 1
var_h = var_f - var_g
var_i = var_a / var_h
print(int(var_i))