No problem, we've got 72919071 and 66138690 to multiply
72919071 × 66138690 = 66138690 × (72919071)
+ 66138690 × 1 producing 66138690
+ 66138690 × 70 what gives us 4629708300
+ 66138690 × 000 which equals 0
+ 66138690 × 9000 that is equal 595248210000
+ 66138690 × 10000 giving us 661386900000
+ 66138690 × 900000 that is equal 59524821000000
+ 66138690 × 2000000 that equals 132277380000000
+ 66138690 × 70000000 producing 4629708300000000

= 4822771831956990
