Alright, let's work through 1557 times 559 step by step
1557 × 559 = 559 × (1557)
+ 559 × 7 that is equal 3913
+ 559 × 50 giving us 27950
+ 559 × 500 yielding 279500
+ 559 × 1000 producing 559000

= 870363
