Alright, let's work through 89190993 times 61601030 step by step
89190993 × 61601030 = 61601030 × (89190993)
+ 61601030 × 3 giving us 184803090
+ 61601030 × 90 which equals 5544092700
+ 61601030 × 900 resulting in 55440927000
+ 61601030 × 0000 producing 0
+ 61601030 × 90000 giving us 5544092700000
+ 61601030 × 100000 yielding 6160103000000
+ 61601030 × 9000000 producing 554409270000000
+ 61601030 × 80000000 that is equal 4928082400000000

= 5494257035522790
