Alright, let's work through 7858 times 4505 step by step
7858 × 4505 = 4505 × (7858)
+ 4505 × 8 producing 36040
+ 4505 × 50 resulting in 225250
+ 4505 × 800 what gives us 3604000
+ 4505 × 7000 which equals 31535000

= 35400290
