Rafik needs a strabismus correction operation

For the first operation, Rafik saved up for a long time, doing it bit by bit from his pension. It was done at the Hi-Tech Clinic. It was a success. There's a good result. Now we need to do another surgery. Rafik's small pension is spent on other important needs and he needs a lot of time to save up 27,000 rubles from it. And it is necessary to make the operation now. Please help Rafik!