Alright, let's work through 18061892 times 83509488 step by step
18061892 × 83509488 = 83509488 × (18061892)
+ 83509488 × 2 that equals 167018976
+ 83509488 × 90 which equals 7515853920
+ 83509488 × 800 that equals 66807590400
+ 83509488 × 1000 that is equal 83509488000
+ 83509488 × 60000 giving us 5010569280000
+ 83509488 × 000000 that results in 0
+ 83509488 × 8000000 which equals 668075904000000
+ 83509488 × 10000000 resulting in 835094880000000

= 1508339353231296
