Alright, let's work through 15248978 times 45440344 step by step
15248978 × 45440344 = 45440344 × (15248978)
+ 45440344 × 8 which equals 363522752
+ 45440344 × 70 resulting in 3180824080
+ 45440344 × 900 which equals 40896309600
+ 45440344 × 8000 that is equal 363522752000
+ 45440344 × 40000 that equals 1817613760000
+ 45440344 × 200000 that is equal 9088068800000
+ 45440344 × 5000000 giving us 227201720000000
+ 45440344 × 10000000 yielding 454403440000000

= 692918805968432
