Alright, let's work through 83826820 times 69370254 step by step
83826820 × 69370254 = 69370254 × (83826820)
+ 69370254 × 0 giving us 0
+ 69370254 × 20 resulting in 1387405080
+ 69370254 × 800 resulting in 55496203200
+ 69370254 × 6000 yielding 416221524000
+ 69370254 × 20000 producing 1387405080000
+ 69370254 × 800000 that is equal 55496203200000
+ 69370254 × 3000000 that is equal 208110762000000
+ 69370254 × 80000000 which equals 5549620320000000

= 5815087795412280
