The baker sold cakes for 453 * 12 = $5436. And pies for 126 * 7 = $882. In total the baker earned 5436 + 882 = $6318.
This justifies what answer for what question? Q & A:

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
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During April, the baker sold 453 cakes at $12 and 126 pies at $7. How much did the baker earn?
6318