No problem, we've got 80849614 and 64674097 to multiply
80849614 × 64674097 = 64674097 × (80849614)
+ 64674097 × 4 what gives us 258696388
+ 64674097 × 10 what gives us 646740970
+ 64674097 × 600 that results in 38804458200
+ 64674097 × 9000 that is equal 582066873000
+ 64674097 × 40000 what gives us 2586963880000
+ 64674097 × 800000 that is equal 51739277600000
+ 64674097 × 0000000 resulting in 0
+ 64674097 × 80000000 yielding 5173927760000000

= 5228875778248558
