Question

please find the proper answer I will mark you as brand list​

Answer 1

$1) \: 671 \times 10 \times 473 - 473 \times 671 \times 10$

$(473 \times 10)(671 - 671)$

$473 \times 0 = 0$

$2) \: 2389 \times 220 - 2389 \times 18 - 2389 \times 2$

$2389(220 - 18 - 2)$

$2389 \times 200$

$477800$