Alright, let's work through 9821 times 4080 step by step
9821 × 4080 = 4080 × (9821)
+ 4080 × 1 that results in 4080
+ 4080 × 20 that results in 81600
+ 4080 × 800 which equals 3264000
+ 4080 × 9000 what gives us 36720000

= 40069680
