Alright, let's work through 1715 times 9977 step by step
1715 × 9977 = 9977 × (1715)
+ 9977 × 5 what gives us 49885
+ 9977 × 10 that is equal 99770
+ 9977 × 700 what gives us 6983900
+ 9977 × 1000 yielding 9977000

= 17110555
