Problem with wp-config.php

Hello, my site keeps showing this message:

nstant ‘ADMIN_COOKIE_PATH’ – assumed ‘‘ADMIN_COOKIE_PATH’’ in /home/c/ceroimagem/www/wp-config.php on line 89

Notice: Use of undefined constant ‘ – assumed ‘‘’ in /home/c/mysite/www/wp-config.php on line 89

Notice: Use of undefined constant ’ – assumed ‘’’ in /home/c/mysite/www/wp-config.php on line 89

Warning: Division by zero in /home/c/mysite/www/wp-config.php on line 89

Notice: Use of undefined constant ‘COOKIE_DOMAIN’ – assumed ‘‘COOKIE_DOMAIN’’ in /home/c/mysite/www/wp-config.php on line 90

Notice: Use of undefined constant ” – assumed ‘”’ in /home/c/mysite/www/wp-config.php on line 90

Notice: Use of undefined constant ‘COOKIEPATH’ – assumed ‘‘COOKIEPATH’’ in /home/c/mysite/www/wp-config.php on line 91

Notice: Use of undefined constant ” – assumed ‘”’ in /home/c/mysite/www/wp-config.php on line 91

Notice: Use of undefined constant ‘SITECOOKIEPATH’ – assumed ‘‘SITECOOKIEPATH’’ in /home/c/mysite/www/wp-config.php on line 92

Notice: Use of undefined constant ” – assumed ‘”’ in /home/c/mysite/www/wp-config.php on line 92

i don’t know what it is and how to fix, can somebody help?