Judging by your screenshot, you didn't write the captcha correctly, so you can't solve it. After all, 0+26+1 is a mathematical expression that does not need to be duplicated, but to write the solution, that is, what will come after =, i.e. the number 27 should be there. That is, you need to write the number 27 there, and not copy the entire mathematical expression, as you have in the picture.
In the next line, the number 24 will also be there.
Those look like O not 0 and I not 1, nevertheless, I'll assume they're zero and one and try again. Thanks.