Alright, let's work through 83934060 times 36421821 step by step
83934060 × 36421821 = 36421821 × (83934060)
+ 36421821 × 0 giving us 0
+ 36421821 × 60 producing 2185309260
+ 36421821 × 000 which equals 0
+ 36421821 × 4000 yielding 145687284000
+ 36421821 × 30000 which equals 1092654630000
+ 36421821 × 900000 that equals 32779638900000
+ 36421821 × 3000000 resulting in 109265463000000
+ 36421821 × 80000000 that is equal 2913745680000000

= 3057031309123260
