Alright, let's work through 90199909 times 80957008 step by step
90199909 × 80957008 = 80957008 × (90199909)
+ 80957008 × 9 yielding 728613072
+ 80957008 × 00 that results in 0
+ 80957008 × 900 that is equal 72861307200
+ 80957008 × 9000 that results in 728613072000
+ 80957008 × 90000 that equals 7286130720000
+ 80957008 × 100000 that is equal 8095700800000
+ 80957008 × 0000000 giving us 0
+ 80957008 × 90000000 that equals 7286130720000000

= 7302314754512272
