No problem, we've got 80364937 and 84443088 to multiply
80364937 × 84443088 = 84443088 × (80364937)
+ 84443088 × 7 which equals 591101616
+ 84443088 × 30 what gives us 2533292640
+ 84443088 × 900 what gives us 75998779200
+ 84443088 × 4000 what gives us 337772352000
+ 84443088 × 60000 producing 5066585280000
+ 84443088 × 300000 that equals 25332926400000
+ 84443088 × 0000000 giving us 0
+ 84443088 × 80000000 that results in 6755447040000000

= 6786263447205456
