No problem, we've got 72173315 and 73297530 to multiply
72173315 × 73297530 = 73297530 × (72173315)
+ 73297530 × 5 what gives us 366487650
+ 73297530 × 10 that equals 732975300
+ 73297530 × 300 giving us 21989259000
+ 73297530 × 3000 that is equal 219892590000
+ 73297530 × 70000 producing 5130827100000
+ 73297530 × 100000 that equals 7329753000000
+ 73297530 × 2000000 yielding 146595060000000
+ 73297530 × 70000000 what gives us 5130827100000000

= 5290125721411950
