Use $2023$ law; please explain clearly

Andy and Sally are married and under $50.$ They have $3$ children ages $7,9$ and $11.$ They pay Sally$$s mom $$200$ a month for the entire year to care for the children.

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Sally$$s salary $($Federal withholding $ $800)8,000$

Andy$$s salary $($Federal withholding $$500)7,000$

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$1.$ If they take a standard deduction, compute their taxable income:

$2.$ Do they qualify for an earned income credit? Why or why not? If so$,$ how much?

$3.$ Do they qualify for a childcare credit? Why or why not?$$ If so$,$ how much?

$4.$ Do they qualify for a child tax? Why or why not?$$ If so$,$ how much?

$5.$ Compute their tax

$6.$ Compute their tax liability or refund:

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