Alright, let's work through 72497406 times 21426687 step by step
72497406 × 21426687 = 21426687 × (72497406)
+ 21426687 × 6 that equals 128560122
+ 21426687 × 00 what gives us 0
+ 21426687 × 400 resulting in 8570674800
+ 21426687 × 7000 what gives us 149986809000
+ 21426687 × 90000 giving us 1928401830000
+ 21426687 × 400000 that equals 8570674800000
+ 21426687 × 2000000 that equals 42853374000000
+ 21426687 × 70000000 giving us 1499868090000000

= 1553379226673922
