Alright, let's work through 81223304 times 36245609 step by step
81223304 × 36245609 = 36245609 × (81223304)
+ 36245609 × 4 which equals 144982436
+ 36245609 × 00 resulting in 0
+ 36245609 × 300 that is equal 10873682700
+ 36245609 × 3000 that results in 108736827000
+ 36245609 × 20000 resulting in 724912180000
+ 36245609 × 200000 yielding 7249121800000
+ 36245609 × 1000000 resulting in 36245609000000
+ 36245609 × 80000000 yielding 2899648720000000

= 2943988118472136
