Answer
1031
Work Step by Step
To change from hexadecimal to decimal form, we have
$$
407=4\times16^2+0\times16^1+7\times16^0\\
=1024+0+7=1031
.$$
You can help us out by revising, improving and updating this answer.
Update this answerAfter you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.