No problem, we've got 9721 and 4020 to multiply
9721 × 4020 = 4020 × (9721)
+ 4020 × 1 resulting in 4020
+ 4020 × 20 that results in 80400
+ 4020 × 700 yielding 2814000
+ 4020 × 9000 producing 36180000

= 39078420
