HELP PLEASE !!

Assume it is December 31, and CI has exactly $12,000 in inventory. (Note, there is a formatting error in the book where part e) is not labeled properly.) CI has a forecast of $11,000 in sales for January and $9,000 in February. How many days of forecast can be met with the current inventory given there are 23 work days in January and 21 in February? (Use specifics, not averages.)