File 'three.txt$\text{'}$ is opened for writing. num$\_$file$\_$obj is assigned with the opened file. Integer first$\_$val is read from input. Complete the following tasks:

Write 'Three numbers: $\text{'}$ to num$\_$file$\_$obj.

Write the values of first$\_$val, first$\_$val $+1,$ and first$\_$val $+2$ to num$\_$file$\_$obj. Separate each value with a comma $(\text{'},\text{'}).$

Write a newline to num$\_$file$\_$obj.