Alright, let's work through 3525 times 8415 step by step
3525 × 8415 = 8415 × (3525)
+ 8415 × 5 what gives us 42075
+ 8415 × 20 which equals 168300
+ 8415 × 500 what gives us 4207500
+ 8415 × 3000 that equals 25245000

= 29662875
