Let's calculate 7845 x 1143
7845 × 1143 = 1143 × (7845)
+ 1143 × 5 that results in 5715
+ 1143 × 40 what gives us 45720
+ 1143 × 800 what gives us 914400
+ 1143 × 7000 what gives us 8001000

= 8966835
