138964 ÷ 34 
Our goal is to divide 138964 by 34.

Going ahead to step 1:
If we divide 1 by 34, we get 0 and a remainder of 1.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 1, we end up with 1.
Append the next digit (3) from the dividend to 1 and continue with: 13 / 34

Moving on to step 2:
When dividing 13 by 34, we get 0 with a remainder of 13.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 13 leaves us with 13.
Grab the next digit (8) from the dividend, add it to 13, then carry on: 138 / 34

Going ahead to step 3:
When dividing 138 by 34, we get 4 with a remainder of 2.
Write down 4 as next digit of the result. 
Result so far: 4.0
Deduct 136 from 138 and we're left with 2.
Append the next digit (9) from the dividend to 2 and continue with: 29 / 34

Step 4:
When dividing 29 by 34, we get 0 with a remainder of 29.
Record the quotient 0 as the next digit in the result. 
Result so far: 40.0
If we take 0 away from 29, we end up with 29.
Append the next digit (6) from the dividend to 29 and continue with: 296 / 34

Let's proceed to step 5:
If we divide 296 by 34, we get 8 and a remainder of 24.
The number 8 becomes the next digit in our result. 
Result so far: 408.0
If we take 272 away from 296, we end up with 24.
Take the next digit (4) from the dividend and append it to 24, then repeat: 244 / 34

On to step 6:
If we divide 244 by 34, we get 7 and a remainder of 6.
The next digit of our result is 7. 
Result so far: 4087.0
If we take 238 away from 244, we end up with 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

On to step 7:
34 can be fit into 60 1 times, resulting in a remainder of 26.
The next digit of our result is 1. 
Result so far: 4087.1
Subtracting 34 from 60 leaves us with 26.
Since there are no more digits in the dividend, we add a zero to the remainder making it 260, and continue the process.

Going ahead to step 8:
34 goes into 260 7 times with a remainder of 22.
Write down 7 as next digit of the result. 
Result so far: 4087.17
The remainder is 22 after subtracting 238 from 260.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

Let's proceed to step 9:
34 goes into 220 6 times with a remainder of 16.
Record the quotient 6 as the next digit in the result. 
Result so far: 4087.176
Subtract 204 from 220 to get 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

On to step 10:
The number 34 fits into 160 4 times, leaving a remainder of 24.
The number 4 becomes the next digit in our result. 
Result so far: 4087.1764
If we take 136 away from 160, we end up with 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

On to step 11:
34 goes into 240 7 times with a remainder of 2.
The next digit of our result is 7. 
Result so far: 4087.17647
If we subtract 238 from 240, we get 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

On to step 12:
34 goes into 20 0 times with a remainder of 20.
Record the quotient 0 as the next digit in the result. 
Result so far: 4087.17647
The remainder is 20 after subtracting 0 from 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Going ahead to step 13:
When dividing 200 by 34, we get 5 with a remainder of 30.
Write down 5 as next digit of the result. 
Result so far: 4087.1764705
If we subtract 170 from 200, we get 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Advancing to step 14:
34 can be fit into 300 8 times, resulting in a remainder of 28.
Put 8 as the next digit of the answer. 
Result so far: 4087.17647058
Subtracting 272 from 300 leaves us with 28.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

The final outcome is 4087.17647058, with a leftover of 2.8e-08.