How can I only find outputs like these in an html file using grep?

Q2(1 points) Apply grep with regular expression to the output of cat security_html_string_file.logxx command to find wait time. Hint: output should be similar to 24 min 14 min closed Q2(1 points) Apply grep with regular expression to the output of cat security_html_string_file.logxx command to find wait time. Hint: output should be similar to 24 min 14 min closed