23. 3/11 as a decimal is 0.27272727.
24. 5/8 as a decimal is 0.625.
25. 7/10 as a decimal is 0.7.
26. 2 5/7 as a decimal is 2.71428571.
And lastly, 27. -1 80/99 as a decimal is 1.888888.
If something seems incorrect here, please don't refrain to tell me.