#### Answer

$6391$

#### Work Step by Step

$3814$ + $2317$
Start at the right of each number and add the ones digits
$4$ + $7$ = $11$ ones
Regroup $11$ ones as 1 ten and 1 one
Write the 1 one in the ones column and write 1 ten in the tens column.
Add the tens digits next including the regrouped 1.
$1 + 7 + 1 = 9$
Write the 9 tens in the tens column
Add the hundreds digits next.
$5 + 8 = 13$ hundreds
Regroup $13$ hundreds as 1 thousand and 3 hundreds
Write the 3 hundreds in the hundreds column. Write the 1 thousand in the thousands column.
Add the thousands digits next including the regrouped 1.
$1 + 3 + 2= 6$. Write the 6 thousand in the thousands column.
The sum of the two numbers is $6391.$
You can also add vertically for easier addition.