Alright, let's work through 83009483 times 71620013 step by step
83009483 × 71620013 = 71620013 × (83009483)
+ 71620013 × 3 that equals 214860039
+ 71620013 × 80 that equals 5729601040
+ 71620013 × 400 producing 28648005200
+ 71620013 × 9000 resulting in 644580117000
+ 71620013 × 00000 which equals 0
+ 71620013 × 000000 which equals 0
+ 71620013 × 3000000 which equals 214860039000000
+ 71620013 × 80000000 that equals 5729601040000000

= 5945140251583279
