No problem, we've got 86622300 and 66887897 to multiply
86622300 × 66887897 = 66887897 × (86622300)
+ 66887897 × 0 what gives us 0
+ 66887897 × 00 what gives us 0
+ 66887897 × 300 which equals 20066369100
+ 66887897 × 2000 producing 133775794000
+ 66887897 × 20000 what gives us 1337757940000
+ 66887897 × 600000 resulting in 40132738200000
+ 66887897 × 6000000 producing 401327382000000
+ 66887897 × 80000000 that results in 5351031760000000

= 5793983480303100
