Alright, let's work through 81054502 times 90055180 step by step
81054502 × 90055180 = 90055180 × (81054502)
+ 90055180 × 2 that is equal 180110360
+ 90055180 × 00 that results in 0
+ 90055180 × 500 that equals 45027590000
+ 90055180 × 4000 producing 360220720000
+ 90055180 × 50000 which equals 4502759000000
+ 90055180 × 000000 yielding 0
+ 90055180 × 1000000 resulting in 90055180000000
+ 90055180 × 80000000 which equals 7204414400000000

= 7299377767420360
