In the previous problem, we saw that each color can be represented using $24$ bits of data. It's pretty easy to extend that idea to images. An image can be stored in a computer as a rectangular grid of pixels, each of which is assigned one color. A QHD $("$quad HD$")$ image has a resolution of $2560$ pixels horizontally by $1440$ pixels vertically. $($QHD is

sometimes called $"1440$p$,"$ although technically a $1440$p image can have horizontal dimensions other than $2560$ pixels.$)($a$)$

$(1$ point$)$ How many total pixels are there in a QHD image?