No problem, we've got 83199168 and 83440352 to multiply
83199168 × 83440352 = 83440352 × (83199168)
+ 83440352 × 8 giving us 667522816
+ 83440352 × 60 what gives us 5006421120
+ 83440352 × 100 yielding 8344035200
+ 83440352 × 9000 resulting in 750963168000
+ 83440352 × 90000 that results in 7509631680000
+ 83440352 × 100000 that equals 8344035200000
+ 83440352 × 3000000 what gives us 250321056000000
+ 83440352 × 80000000 that is equal 6675228160000000

= 6942167864027136
