1. **Problem Statement:** Find the answers for the empty boxes in the given problem (assuming the problem is related to the previous date calculation). 2. **Step 1: Identify the missing values.** Since the previous problem involved calculating the day of the week for March 14, 1988, based on March 14, 2021, the empty boxes likely correspond to intermediate values such as total years, leap years, total days, and modulo results. 3. **Step 2: Calculate total years between 1988 and 2021:** $$2021 - 1988 = 33$$ 4. **Step 3: Calculate number of leap years between 1988 and 2021:** Leap years are years divisible by 4 but not by 100 unless divisible by 400. The leap years are: 1988, 1992, 1996, 2000, 2004, 2008, 2012, 2016, 2020. Count: 9 leap years. 5. **Step 4: Calculate total days difference:** $$33 \times 365 + 9 = 12045 + 9 = 12054$$ 6. **Step 5: Calculate modulo 7 of total days:** Divide 12054 by 7: $$12054 \div 7 = 1722 \text{ remainder } 0$$ So, $$12054 \equiv 0 \pmod{7}$$ 7. **Step 6: Determine the day of the week:** Since March 14, 2021 was Sunday (0), subtracting 0 days modulo 7 means March 14, 1988 was also Sunday. **Final answer:** The empty boxes correspond to: - Total years: 33 - Leap years: 9 - Total days: 12054 - Modulo 7 result: 0 - Day of the week: Sunday