Alright, let's work through 1905 times 9828 step by step
1905 × 9828 = 9828 × (1905)
+ 9828 × 5 which equals 49140
+ 9828 × 00 giving us 0
+ 9828 × 900 giving us 8845200
+ 9828 × 1000 yielding 9828000

= 18722340
