Alright, let's work through 83197593 times 64385158 step by step
83197593 × 64385158 = 64385158 × (83197593)
+ 64385158 × 3 that results in 193155474
+ 64385158 × 90 that equals 5794664220
+ 64385158 × 500 that is equal 32192579000
+ 64385158 × 7000 that equals 450696106000
+ 64385158 × 90000 what gives us 5794664220000
+ 64385158 × 100000 what gives us 6438515800000
+ 64385158 × 3000000 what gives us 193155474000000
+ 64385158 × 80000000 giving us 5150812640000000

= 5356690170524694
