Alright, let's work through 97167647 times 80128128 step by step
97167647 × 80128128 = 80128128 × (97167647)
+ 80128128 × 7 giving us 560896896
+ 80128128 × 40 that is equal 3205125120
+ 80128128 × 600 that results in 48076876800
+ 80128128 × 7000 resulting in 560896896000
+ 80128128 × 60000 that results in 4807687680000
+ 80128128 × 100000 that results in 8012812800000
+ 80128128 × 7000000 what gives us 560896896000000
+ 80128128 × 90000000 that results in 7211531520000000

= 7785861656274816
