Find the number of ways of picking $4$ cards from a set of $52$ playing cards if all four cards are of the same suit?

A standard deck of $52$ cards has $4$ suits: Diamonds, Spades, Hearts, and Clubs. Each suit has $13$ cards.We need to choose $4$ cards such that they are all from the same suit.Ways to choose $4$ cards from Diamonds = $\left(\genfrac{}{}{0ex}{}{13}{4}\right)$ Ways to choose $4$ cards from Spades = $\left(\genfrac{}{}{0ex}{}{13}{4}\right)$ Ways to choose $4$ cards from Hearts = $\left(\genfrac{}{}{0ex}{}{13}{4}\right)$ Ways to choose $4$ cards from Clubs = $\left(\genfrac{}{}{0ex}{}{13}{4}\right)$ Calculation for $\left(\genfrac{}{}{0ex}{}{13}{4}\right)$:
$$\left(\genfrac{}{}{0ex}{}{13}{4}\right)=\frac{13\times 12\times 11\times 10}{4\times 3\times 2\times 1}=13\times 11\times 5=715$$
Total ways = $4\times 715=2860$.