She told me she had never heard someone walk through the math verbally so clearly!

I just cased again with an ex-McKinsey Analyst and was given a case she had given to many people before. She told me she had never heard someone walk through the math verbally (i.e., the high level approach step) so clearly! I also got to use the table format you suggested for the math, which totally helped my structuring and ultimately led to a successful calculation. So thank you again for that great advice!