How to get views result count programmatically - Drupal 7

The current project I'm working on has a lot of customization of Drupal Commerce and display of views. One of the customization I've done is while displaying views result, show total of two views results in one view i.e. there are two views viewA and viewB shown on page, which shares the output and so we need to show the sum of total results in viewA and viewB will be displayed in viewA header.

Here's how I've achieved this with only few lines of code: