No problem, we've got 9880 and 7903 to multiply
9880 × 7903 = 7903 × (9880)
+ 7903 × 0 what gives us 0
+ 7903 × 80 resulting in 632240
+ 7903 × 800 producing 6322400
+ 7903 × 9000 that is equal 71127000

= 78081640
