Mijoo's house is on the 1st from the left, the 7th from the right, the 2nd from the top floor, and the 4th from the bottom floor of the apartment. If the number of houses in each row is the same and there are 3 households in each house, how many households live in this apartment?
1 7 [OP_ADD] 1 [OP_SUB] 2 4 [OP_ADD] 1 [OP_SUB] [OP_MUL] 3 [OP_MUL]
var_a = 1
var_b = 7
var_c = var_a + var_b
var_d = 1
var_e = var_c - var_d
var_f = 2
var_g = 4
var_h = var_f + var_g
var_i = 1
var_j = var_h - var_i
var_k = var_e * var_j
var_l = 3
var_m = var_k * var_l
print(int(var_m))