Alright, let's work through 81320430 times 41380345 step by step
81320430 × 41380345 = 41380345 × (81320430)
+ 41380345 × 0 producing 0
+ 41380345 × 30 what gives us 1241410350
+ 41380345 × 400 resulting in 16552138000
+ 41380345 × 0000 resulting in 0
+ 41380345 × 20000 giving us 827606900000
+ 41380345 × 300000 giving us 12414103500000
+ 41380345 × 1000000 that is equal 41380345000000
+ 41380345 × 80000000 giving us 3310427600000000

= 3365067448948350
