Error line 219

HI
I am having problem with these errors. 1.) I used auto-load post (feed mosnter) and cancelled it. Then I received error: Warning: Division by zero in /xxxxx/xxxxxx/public_html/wp-content/plugins/affiliate-post-monster/pj_feed_page.php on line 526
2.) I used build-shop page(feed monster) and saw the new page on the back end but can’t see them on the front end. So I started new posts and transfered the codes froms the pages to the new posts then I published. After that I deleted all the new pages. It gave me this error – Warning: Division by zero in /xxxxx/xxxxxx/public_html/wp-content/plugins/affiliate-post-monster/pj_functions.php on line 219
Thanks for your help