101000000000000000000000000 x 100000000 = 10100000000000000000000000000000000
101000000000000000000000000x100000000=10100000000000000000000000000000000
Đúng thì ✓
1010000000000000000000000000000000x100000000=1010000000000000000000000000000000000000000