Alright, let's work through 55816723 times 8118303 step by step
55816723 × 8118303 = 8118303 × (55816723)
+ 8118303 × 3 resulting in 24354909
+ 8118303 × 20 what gives us 162366060
+ 8118303 × 700 that results in 5682812100
+ 8118303 × 6000 which equals 48709818000
+ 8118303 × 10000 that results in 81183030000
+ 8118303 × 800000 that is equal 6494642400000
+ 8118303 × 5000000 giving us 40591515000000
+ 8118303 × 50000000 giving us 405915150000000

= 453137069781069
