Yoongi wants to add a four-digit number to 57. Yoongi saw 9 in the ones place of a four-digit number wrong, and saw it as 6. When the sum Yoongi got is 1823, find this four-digit number.
1823 57 [OP_SUB] 6 9 [OP_SUB] [OP_SUB]
var_a = 1823
var_b = 57
var_c = var_a - var_b
var_d = 6
var_e = 9
var_f = var_d - var_e
var_g = var_c - var_f
print(int(var_g))