Answer
8400
Work Step by Step
$4050\approx4100$
$3133\approx3100$
$1220\approx\underline{1200}$
$\ \ \ \ \ \ \ \ \ \ \ \ \ \ 8400$
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.