Alright, let's work through 70304389 times 71889842 step by step
70304389 × 71889842 = 71889842 × (70304389)
+ 71889842 × 9 what gives us 647008578
+ 71889842 × 80 that is equal 5751187360
+ 71889842 × 300 producing 21566952600
+ 71889842 × 4000 producing 287559368000
+ 71889842 × 00000 what gives us 0
+ 71889842 × 300000 yielding 21566952600000
+ 71889842 × 0000000 which equals 0
+ 71889842 × 70000000 that is equal 5032288940000000

= 5054171417116538
