No problem, we've got 80168311 and 47966608 to multiply
80168311 × 47966608 = 47966608 × (80168311)
+ 47966608 × 1 what gives us 47966608
+ 47966608 × 10 which equals 479666080
+ 47966608 × 300 producing 14389982400
+ 47966608 × 8000 producing 383732864000
+ 47966608 × 60000 which equals 2877996480000
+ 47966608 × 100000 that results in 4796660800000
+ 47966608 × 0000000 yielding 0
+ 47966608 × 80000000 that is equal 3837328640000000

= 3845401947759088
