Alright, let's work through 84633274 times 39643409 step by step
84633274 × 39643409 = 39643409 × (84633274)
+ 39643409 × 4 what gives us 158573636
+ 39643409 × 70 yielding 2775038630
+ 39643409 × 200 yielding 7928681800
+ 39643409 × 3000 resulting in 118930227000
+ 39643409 × 30000 giving us 1189302270000
+ 39643409 × 600000 that is equal 23786045400000
+ 39643409 × 4000000 that equals 158573636000000
+ 39643409 × 80000000 giving us 3171472720000000

= 3355151496191066
