To find the total distance run by the 9 runners, we first need to calculate the distance each runner runs, which is \( \frac{3}{5} \) of a kilometer.
The total distance for all 9 runners can be calculated by multiplying their individual distance by the number of runners:
\[ \text{Total distance} = 9 \times \frac{3}{5} \]
To multiply, we can convert 9 to a fraction as follows:
\[ 9 = \frac{9}{1} \]
Now we multiply the fractions:
\[ \text{Total distance} = \frac{9}{1} \times \frac{3}{5} = \frac{9 \times 3}{1 \times 5} = \frac{27}{5} \]
Next, we need to convert \( \frac{27}{5} \) into a mixed fraction. To do this, we divide the numerator (27) by the denominator (5):
\[ 27 \div 5 = 5 \quad \text{with a remainder of } 2 \]
This means \( 27 = 5 \times 5 + 2 \), so we can express \( \frac{27}{5} \) as a mixed fraction:
\[ \frac{27}{5} = 5 \frac{2}{5} \]
Thus, the total distance run by the 9 runners is:
\[ \boxed{5 \frac{2}{5}} \] kilometers.
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