No problem, we've got 8097413 and 99981541 to multiply
8097413 × 99981541 = 99981541 × (8097413)
+ 99981541 × 3 what gives us 299944623
+ 99981541 × 10 which equals 999815410
+ 99981541 × 400 which equals 39992616400
+ 99981541 × 7000 that equals 699870787000
+ 99981541 × 90000 yielding 8998338690000
+ 99981541 × 000000 resulting in 0
+ 99981541 × 8000000 yielding 799852328000000

= 809591829853433
