Alright, let's work through 1583 times 261 step by step
1583 × 261 = 261 × (1583)
+ 261 × 3 yielding 783
+ 261 × 80 what gives us 20880
+ 261 × 500 that is equal 130500
+ 261 × 1000 giving us 261000

= 413163
