If x and y are integers and a and b are float variables, and their values are as shown in the image, then what is the result of the following expressions?

$[$Fig $2\mathrm{.}17]$

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Press space or enter to grab $4\mathrm{.}667$

a $/$ b

Press space or enter to grab $0\mathrm{.}214$

b $/$ a

Press space or enter to grab $4$

x $/$ y

Press space or enter to grab $0$

y $/$ x

Press space or enter to grab $3$

Press space or enter to grab undefined

Press space or enter to grab $3\mathrm{.}0$