Alright, let's work through 1515 times 5457 step by step
1515 × 5457 = 5457 × (1515)
+ 5457 × 5 that equals 27285
+ 5457 × 10 which equals 54570
+ 5457 × 500 that is equal 2728500
+ 5457 × 1000 giving us 5457000

= 8267355
