The total weight of 9 apples of the same weight is 4.5 kilograms (kg). Several melons weighing 850 grams (g) and two apples were placed on one side of the pan balance scale, and five watermelons weighing 1050 grams (g) were placed on the other side, and they were level. How many melons are there?
1050 5 [OP_MUL] 4.5 1000 [OP_MUL] 9 [OP_DIV] 2 [OP_MUL] [OP_SUB] 850 [OP_DIV]
var_a = 1050
var_b = 5
var_c = var_a * var_b
var_d = 4.5
var_e = 1000
var_f = var_d * var_e
var_g = 9
var_h = var_f / var_g
var_i = 2
var_j = var_h * var_i
var_k = var_c - var_j
var_l = 850
var_m = var_k / var_l
print(int(var_m))