No problem, we've got 9963 and 8600 to multiply
9963 × 8600 = 8600 × (9963)
+ 8600 × 3 that is equal 25800
+ 8600 × 60 that is equal 516000
+ 8600 × 900 that is equal 7740000
+ 8600 × 9000 that equals 77400000

= 85681800
