No problem, we've got 72670131 and 71311085 to multiply
72670131 × 71311085 = 71311085 × (72670131)
+ 71311085 × 1 that equals 71311085
+ 71311085 × 30 producing 2139332550
+ 71311085 × 100 which equals 7131108500
+ 71311085 × 0000 which equals 0
+ 71311085 × 70000 what gives us 4991775950000
+ 71311085 × 600000 that equals 42786651000000
+ 71311085 × 2000000 what gives us 142622170000000
+ 71311085 × 70000000 yielding 4991775950000000

= 5182185888702135
