Alright, let's work through 71972701 times 79586887 step by step
71972701 × 79586887 = 79586887 × (71972701)
+ 79586887 × 1 that equals 79586887
+ 79586887 × 00 producing 0
+ 79586887 × 700 producing 55710820900
+ 79586887 × 2000 producing 159173774000
+ 79586887 × 70000 producing 5571082090000
+ 79586887 × 900000 producing 71628198300000
+ 79586887 × 1000000 giving us 79586887000000
+ 79586887 × 70000000 resulting in 5571082090000000

= 5728083221571787
