Alright, let's work through 83665518 times 35642238 step by step
83665518 × 35642238 = 35642238 × (83665518)
+ 35642238 × 8 giving us 285137904
+ 35642238 × 10 yielding 356422380
+ 35642238 × 500 which equals 17821119000
+ 35642238 × 5000 that is equal 178211190000
+ 35642238 × 60000 yielding 2138534280000
+ 35642238 × 600000 that equals 21385342800000
+ 35642238 × 3000000 producing 106926714000000
+ 35642238 × 80000000 giving us 2851379040000000

= 2982026304949284
