No problem, we've got 72972641 and 23873780 to multiply
72972641 × 23873780 = 23873780 × (72972641)
+ 23873780 × 1 what gives us 23873780
+ 23873780 × 40 which equals 954951200
+ 23873780 × 600 which equals 14324268000
+ 23873780 × 2000 what gives us 47747560000
+ 23873780 × 70000 yielding 1671164600000
+ 23873780 × 900000 that equals 21486402000000
+ 23873780 × 2000000 that results in 47747560000000
+ 23873780 × 70000000 giving us 1671164600000000

= 1742132777252980
