Alright, let's work through 81309085 times 48358725 step by step
81309085 × 48358725 = 48358725 × (81309085)
+ 48358725 × 5 resulting in 241793625
+ 48358725 × 80 what gives us 3868698000
+ 48358725 × 000 producing 0
+ 48358725 × 9000 giving us 435228525000
+ 48358725 × 00000 that results in 0
+ 48358725 × 300000 yielding 14507617500000
+ 48358725 × 1000000 producing 48358725000000
+ 48358725 × 80000000 producing 3868698000000000

= 3932003681516625
