Alright, let's work through 81386097 times 21410229 step by step
81386097 × 21410229 = 21410229 × (81386097)
+ 21410229 × 7 giving us 149871603
+ 21410229 × 90 producing 1926920610
+ 21410229 × 000 yielding 0
+ 21410229 × 6000 yielding 128461374000
+ 21410229 × 80000 giving us 1712818320000
+ 21410229 × 300000 that equals 6423068700000
+ 21410229 × 1000000 yielding 21410229000000
+ 21410229 × 80000000 that is equal 1712818320000000

= 1742494974186213
