No
the sum of the 2 smaller should be bigger than 11
2+8=10
10 is not bigger than 11
For long division, you would put 700 in the middle, since the fraction would be 700/21. Then you would figure out how many times 21 goes into 700. Then you would subtract 700 by the amount it would be before it went above 700 by multiplying it by 21. Then, if it is not able to go into 700 fully, you would put a decimal and bring a 0 down.
1/2 + 2/3 = 4/6 ? (which would ten be simplified to 1/3)
I'm not at ur if this is correct but hopefully it is.