Alright, let's work through 85380617 times 65620419 step by step
85380617 × 65620419 = 65620419 × (85380617)
+ 65620419 × 7 which equals 459342933
+ 65620419 × 10 producing 656204190
+ 65620419 × 600 what gives us 39372251400
+ 65620419 × 0000 that is equal 0
+ 65620419 × 80000 that results in 5249633520000
+ 65620419 × 300000 producing 19686125700000
+ 65620419 × 5000000 producing 328102095000000
+ 65620419 × 80000000 that is equal 5249633520000000

= 5602711862018523
