Alright, let's work through 72399973 times 26536162 step by step
72399973 × 26536162 = 26536162 × (72399973)
+ 26536162 × 3 yielding 79608486
+ 26536162 × 70 producing 1857531340
+ 26536162 × 900 yielding 23882545800
+ 26536162 × 9000 resulting in 238825458000
+ 26536162 × 90000 which equals 2388254580000
+ 26536162 × 300000 that results in 7960848600000
+ 26536162 × 2000000 that results in 53072324000000
+ 26536162 × 70000000 what gives us 1857531340000000

= 1921217412323626
