Alright, let's work through 5818 times 3505 step by step
5818 × 3505 = 3505 × (5818)
+ 3505 × 8 which equals 28040
+ 3505 × 10 giving us 35050
+ 3505 × 800 giving us 2804000
+ 3505 × 5000 that is equal 17525000

= 20392090
