The answer would be 799
Here’s how you solve it!
First you would want to take the first number 6 and see if 8 can go inside of it, since it can’t then you would also take the second number and see if 63 can go into 8, since it can then you would want to find out how many times it can go in.
8 ✖️7 = 56 so put the 7 on top. Then 63 ➖ 56 = 7 and then bring the 9 down and you have 79. 8 ✖️ 9 = 72 so you would put the 9 on top and subtract 79 and 72. Since you get 7 you would bring the 2 down and since 8 ✖️9= 72 it cancels out and your answer would be 799.
See the picture below for a better understanding.
Hope this helps! :3