Alright, let's work through 7805 times 315 step by step
7805 × 315 = 315 × (7805)
+ 315 × 5 which equals 1575
+ 315 × 00 giving us 0
+ 315 × 800 giving us 252000
+ 315 × 7000 that is equal 2205000

= 2458575
