No problem, we've got 8421 and 9228 to multiply
8421 × 9228 = 9228 × (8421)
+ 9228 × 1 giving us 9228
+ 9228 × 20 which equals 184560
+ 9228 × 400 resulting in 3691200
+ 9228 × 8000 that is equal 73824000

= 77708988
