Alright, let's work through 54137360 times 55078993 step by step
54137360 × 55078993 = 55078993 × (54137360)
+ 55078993 × 0 producing 0
+ 55078993 × 60 that equals 3304739580
+ 55078993 × 300 which equals 16523697900
+ 55078993 × 7000 what gives us 385552951000
+ 55078993 × 30000 giving us 1652369790000
+ 55078993 × 100000 yielding 5507899300000
+ 55078993 × 4000000 that equals 220315972000000
+ 55078993 × 50000000 that equals 2753949650000000

= 2981831272478480
