Alright, let's work through 1581 times 707 step by step
1581 × 707 = 707 × (1581)
+ 707 × 1 that equals 707
+ 707 × 80 yielding 56560
+ 707 × 500 that results in 353500
+ 707 × 1000 what gives us 707000

= 1117767
