Mitotic is a nuclear division, the key function of mitosis is to produce two daughter cells. They are genetically identical to the original parent cell.
When somatic cells divide, they increase their number, and accompany nuclear division through mitosis.
Mitosis takes place in diploid or haploid cells. As a result, one progenitor cell becomes two. This can be explained as follows.
2n----2n+2n
or
n---n+n