Alright, let's work through 70777996 times 21644164 step by step
70777996 × 21644164 = 21644164 × (70777996)
+ 21644164 × 6 that results in 129864984
+ 21644164 × 90 which equals 1947974760
+ 21644164 × 900 resulting in 19479747600
+ 21644164 × 7000 yielding 151509148000
+ 21644164 × 70000 yielding 1515091480000
+ 21644164 × 700000 what gives us 15150914800000
+ 21644164 × 0000000 yielding 0
+ 21644164 × 70000000 producing 1515091480000000

= 1531930553015344
