Function: divide(invert(mean(divide(numbers('xyy'), numbers('ryy')) if numbers('yyx') > numbers('xyy') else numbers('ryy'), divide(numbers('xyy'), numbers('ryy')))), mean(numbers('yyx') if numbers('ryy') > numbers('xyy') else divide(numbers('xyy'), numbers('ryy')), divide(numbers('xyy'), numbers('ryy'))))
