Конвертер 7 Малазийских ринггитов к Казахстанскому Тенге

Uncaught Error: Unsupported operand types: float * string
in /var/www/html/wp-content/themes/bankkz/template-blocks/converter-price-dynamics.php on line 22

Call stack:

1. calculate_difference()
   wp-content/themes/bankkz/template-blocks/converter-price-dynamics.php:92
2. require('/var/www/html/wp-con...r-price-dynamics.php')
   wp-includes/template.php:812
3. load_template()
   wp-includes/template.php:745
4. locate_template()
   wp-includes/general-template.php:206
5. get_template_part()
   wp-content/themes/bankkz/single-converter.php:140
6. include('/var/www/html/wp-con...single-converter.php')
   wp-includes/template-loader.php:106
7. require_once('/var/www/html/wp-includes/template-loader.php')
   wp-blog-header.php:19
8. require('/var/www/html/wp-blog-header.php')
   index.php:17