Alright, let's work through 79382131 times 520865 step by step
79382131 × 520865 = 520865 × (79382131)
+ 520865 × 1 that equals 520865
+ 520865 × 30 yielding 15625950
+ 520865 × 100 what gives us 52086500
+ 520865 × 2000 that is equal 1041730000
+ 520865 × 80000 which equals 41669200000
+ 520865 × 300000 what gives us 156259500000
+ 520865 × 9000000 that results in 4687785000000
+ 520865 × 70000000 that is equal 36460550000000

= 41347373663315
