Alright, let's work through 1578 times 849 step by step
1578 × 849 = 849 × (1578)
+ 849 × 8 resulting in 6792
+ 849 × 70 what gives us 59430
+ 849 × 500 producing 424500
+ 849 × 1000 which equals 849000

= 1339722
