Alright, let's work through 4521 times 2115 step by step
4521 × 2115 = 2115 × (4521)
+ 2115 × 1 that results in 2115
+ 2115 × 20 that results in 42300
+ 2115 × 500 that equals 1057500
+ 2115 × 4000 resulting in 8460000

= 9561915
