No problem, we've got 71051620 and 72313748 to multiply
71051620 × 72313748 = 72313748 × (71051620)
+ 72313748 × 0 what gives us 0
+ 72313748 × 20 yielding 1446274960
+ 72313748 × 600 producing 43388248800
+ 72313748 × 1000 that equals 72313748000
+ 72313748 × 50000 producing 3615687400000
+ 72313748 × 000000 resulting in 0
+ 72313748 × 1000000 that is equal 72313748000000
+ 72313748 × 70000000 yielding 5061962360000000

= 5138008943671760
