Alright, let's work through 4845 times 3900 step by step
4845 × 3900 = 3900 × (4845)
+ 3900 × 5 yielding 19500
+ 3900 × 40 that equals 156000
+ 3900 × 800 what gives us 3120000
+ 3900 × 4000 resulting in 15600000

= 18895500
