No problem, we've got 99708431 and 79691309 to multiply
99708431 × 79691309 = 79691309 × (99708431)
+ 79691309 × 1 that equals 79691309
+ 79691309 × 30 that equals 2390739270
+ 79691309 × 400 producing 31876523600
+ 79691309 × 8000 resulting in 637530472000
+ 79691309 × 00000 that results in 0
+ 79691309 × 700000 what gives us 55783916300000
+ 79691309 × 9000000 that equals 717221781000000
+ 79691309 × 90000000 producing 7172217810000000

= 7945895384726179
