I am not that sure about the answer I think it may be like

21/5 × 1/3
so that is 7/5

Understanding the Problem
To determine how much of the book Shant will read in 2 1/5 hours, we first need to convert the time into a more manageable fraction.

Step 1: Convert the Mixed Fraction
- The time Shant reads is 2 1/5 hours.
- To convert this, we multiply the whole number (2) by the denominator (5) and add the numerator (1):
- \(2 \times 5 + 1 = 10 + 1 = 11\)
- Therefore, 2 1/5 hours can be expressed as:
- \( \frac{11}{5} \) hours

Step 2: Determine the Reading Rate
- Shant reads \( \frac{1}{3} \) part of the book in 1 hour.

Step 3: Calculate the Total Reading in \( \frac{11}{5} \) Hours
- To find out how much he reads in \( \frac{11}{5} \) hours, multiply the reading rate by the total time:
- Total Reading = Reading Rate × Time
- Total Reading = \( \frac{1}{3} \) × \( \frac{11}{5} \)

Step 4: Perform the Multiplication
- To multiply the fractions:
- \( \frac{1 \times 11}{3 \times 5} = \frac{11}{15} \)

Conclusion
- In 2 1/5 hours, Shant will read \( \frac{11}{15} \) of the book. This means he will finish a little more than two-thirds of the book in the given time!