Alright, let's work through 48399517 times 38931217 step by step
48399517 × 38931217 = 38931217 × (48399517)
+ 38931217 × 7 that equals 272518519
+ 38931217 × 10 that results in 389312170
+ 38931217 × 500 what gives us 19465608500
+ 38931217 × 9000 that equals 350380953000
+ 38931217 × 90000 what gives us 3503809530000
+ 38931217 × 300000 what gives us 11679365100000
+ 38931217 × 8000000 giving us 311449736000000
+ 38931217 × 40000000 yielding 1557248680000000

= 1884252099022189
