No problem, we've got 1787 and 8770 to multiply
1787 × 8770 = 8770 × (1787)
+ 8770 × 7 resulting in 61390
+ 8770 × 80 which equals 701600
+ 8770 × 700 that equals 6139000
+ 8770 × 1000 which equals 8770000

= 15671990
