Alright, let's work through 81344229 times 10210097 step by step
81344229 × 10210097 = 10210097 × (81344229)
+ 10210097 × 9 giving us 91890873
+ 10210097 × 20 that is equal 204201940
+ 10210097 × 200 that equals 2042019400
+ 10210097 × 4000 resulting in 40840388000
+ 10210097 × 40000 that equals 408403880000
+ 10210097 × 300000 that results in 3063029100000
+ 10210097 × 1000000 giving us 10210097000000
+ 10210097 × 80000000 resulting in 816807760000000

= 830532468480213
