No problem, we've got 9815 and 8100 to multiply
9815 × 8100 = 8100 × (9815)
+ 8100 × 5 resulting in 40500
+ 8100 × 10 that results in 81000
+ 8100 × 800 what gives us 6480000
+ 8100 × 9000 producing 72900000

= 79501500
