Alright, let's work through 1009 times 8707 step by step
1009 × 8707 = 8707 × (1009)
+ 8707 × 9 producing 78363
+ 8707 × 00 that equals 0
+ 8707 × 000 giving us 0
+ 8707 × 1000 what gives us 8707000

= 8785363
