No problem, we've got 9881 and 3123 to multiply
9881 × 3123 = 3123 × (9881)
+ 3123 × 1 what gives us 3123
+ 3123 × 80 that is equal 249840
+ 3123 × 800 which equals 2498400
+ 3123 × 9000 which equals 28107000

= 30858363
