No problem, we've got 8315 and 9669 to multiply
8315 × 9669 = 9669 × (8315)
+ 9669 × 5 what gives us 48345
+ 9669 × 10 resulting in 96690
+ 9669 × 300 that equals 2900700
+ 9669 × 8000 that is equal 77352000

= 80397735
