Alright, let's work through 78637952 times 79293763 step by step
78637952 × 79293763 = 79293763 × (78637952)
+ 79293763 × 2 which equals 158587526
+ 79293763 × 50 giving us 3964688150
+ 79293763 × 900 which equals 71364386700
+ 79293763 × 7000 giving us 555056341000
+ 79293763 × 30000 that is equal 2378812890000
+ 79293763 × 600000 giving us 47576257800000
+ 79293763 × 8000000 producing 634350104000000
+ 79293763 × 70000000 giving us 5550563410000000

= 6235499128693376
