How do you calculat 2 x five eighths?

To calculate (2 \times \frac{5}{8}), you multiply the whole number by the numerator of the fraction. This gives you (2 \times 5 = 10). Then, you keep the denominator the same, resulting in (\frac{10}{8}). You can simplify this fraction to (\frac{5}{4}) or (1 \frac{1}{4}) as a mixed number.