Alright, let's work through 7781 times 2101 step by step
7781 × 2101 = 2101 × (7781)
+ 2101 × 1 that equals 2101
+ 2101 × 80 yielding 168080
+ 2101 × 700 that is equal 1470700
+ 2101 × 7000 what gives us 14707000

= 16347881
