Answer
3693
Work Step by Step
$\ \ \ \overset3/\!\!\!4\overset9/\!\!\!0\overset9/\!\!\!0\overset{10}0$
$\underline{-\ \ 307}$
$\ \ \ 3693$
$\ \ \ \overset13\overset16\overset193$
$\underline{+\ \ 307}$
$\ \ \ 4000 \checkmark$
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