20399968 ÷ 349 
Let's see how many times 349 fits into 20399968.

On to step 1:
349 goes into 2 0 times with a remainder of 2.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 2 to get 2.
Bring next digit (0) of the dividend behind the 2 and repeat the process: 20 / 349

Let's proceed to step 2:
349 can be fit into 20 0 times, resulting in a remainder of 20.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 20 leaves us with 20.
Fetch the next digit (3) from the dividend, attach it to 20 and continue: 203 / 349

Step 3:
If we divide 203 by 349, we get 0 and a remainder of 203.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 203, we get 203.
Fetch the next digit (9) from the dividend, attach it to 203 and continue: 2039 / 349

Going ahead to step 4:
When dividing 2039 by 349, we get 5 with a remainder of 294.
Record the quotient 5 as the next digit in the result. 
Result so far: 5.0
Subtracting 1745 from 2039 leaves us with 294.
Grab the next digit (9) from the dividend, add it to 294, then carry on: 2949 / 349

Step 5:
349 goes into 2949 8 times with a remainder of 157.
The number 8 becomes the next digit in our result. 
Result so far: 58.0
Deduct 2792 from 2949 and we're left with 157.
Take the next digit (9) from the dividend and append it to 157, then repeat: 1579 / 349

Going ahead to step 6:
If we divide 1579 by 349, we get 4 and a remainder of 183.
Record the quotient 4 as the next digit in the result. 
Result so far: 584.0
The remainder is 183 after subtracting 1396 from 1579.
Bring next digit (6) of the dividend behind the 183 and repeat the process: 1836 / 349

Moving on to step 7:
349 can be fit into 1836 5 times, resulting in a remainder of 91.
Put 5 as the next digit of the answer. 
Result so far: 5845.0
Subtract 1745 from 1836 to get 91.
Grab the next digit (8) from the dividend, add it to 91, then carry on: 918 / 349

On to step 8:
The number 349 fits into 918 2 times, leaving a remainder of 220.
Use 2 as the next digit of our solution. 
Result so far: 58452.0
Subtract 698 from 918 to get 220.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2200, and continue the process.

Step 9:
349 can be fit into 2200 6 times, resulting in a remainder of 106.
Use 6 as the next digit of our solution. 
Result so far: 58452.6
If we subtract 2094 from 2200, we get 106.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1060, and continue the process.

Moving on to step 10:
349 can be fit into 1060 3 times, resulting in a remainder of 13.
Put 3 as the next digit of the answer. 
Result so far: 58452.63
Subtract 1047 from 1060 to get 13.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

On to step 11:
If we divide 130 by 349, we get 0 and a remainder of 130.
Write down 0 as next digit of the result. 
Result so far: 58452.63
If we subtract 0 from 130, we get 130.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1300, and continue the process.

Going ahead to step 12:
349 goes into 1300 3 times with a remainder of 253.
The number 3 becomes the next digit in our result. 
Result so far: 58452.6303
If we take 1047 away from 1300, we end up with 253.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2530, and continue the process.

Moving on to step 13:
When dividing 2530 by 349, we get 7 with a remainder of 87.
Write down 7 as next digit of the result. 
Result so far: 58452.63037
If we take 2443 away from 2530, we end up with 87.
Since there are no more digits in the dividend, we add a zero to the remainder making it 870, and continue the process.

Moving on to step 14:
If we divide 870 by 349, we get 2 and a remainder of 172.
The next digit of our result is 2. 
Result so far: 58452.630372
Subtract 698 from 870 to get 172.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1720, and continue the process.

Advancing to step 15:
349 goes into 1720 4 times with a remainder of 324.
The number 4 becomes the next digit in our result. 
Result so far: 58452.6303724
Subtracting 1396 from 1720 leaves us with 324.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3240, and continue the process.

Advancing to step 16:
349 can be fit into 3240 9 times, resulting in a remainder of 99.
Record the quotient 9 as the next digit in the result. 
Result so far: 58452.63037249
Subtracting 3141 from 3240 leaves us with 99.
Since there are no more digits in the dividend, we add a zero to the remainder making it 990, and continue the process.

The final outcome is 58452.63037249, with a leftover of 9.9e-08.