Alright, let's work through 5349678 times 1253791 step by step
5349678 × 1253791 = 1253791 × (5349678)
+ 1253791 × 8 that results in 10030328
+ 1253791 × 70 resulting in 87765370
+ 1253791 × 600 resulting in 752274600
+ 1253791 × 9000 giving us 11284119000
+ 1253791 × 40000 what gives us 50151640000
+ 1253791 × 300000 what gives us 376137300000
+ 1253791 × 5000000 yielding 6268955000000

= 6707378129298
