On one side of the road, 10 trees are planted at intervals of 10 meters (m) from start to finish. Find the length in meters (m) of this road.
10 1 [OP_SUB] 10 [OP_MUL]
var_a = 10
var_b = 1
var_c = var_a - var_b
var_d = 10
var_e = var_c * var_d
print(int(var_e))