Alright, let's work through 83352105 times 12690705 step by step
83352105 × 12690705 = 12690705 × (83352105)
+ 12690705 × 5 resulting in 63453525
+ 12690705 × 00 which equals 0
+ 12690705 × 100 that is equal 1269070500
+ 12690705 × 2000 that is equal 25381410000
+ 12690705 × 50000 which equals 634535250000
+ 12690705 × 300000 which equals 3807211500000
+ 12690705 × 3000000 producing 38072115000000
+ 12690705 × 80000000 that is equal 1015256400000000

= 1057796975684025
