We're dividing 421907 by 29 
Let's see how many times 29 fits into 421907.

Step 1:
When dividing 4 by 29, we get 0 with a remainder of 4.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 4, we end up with 4.
Fetch the next digit (2) from the dividend, attach it to 4 and continue: 42 / 29

Advancing to step 2:
29 goes into 42 1 times with a remainder of 13.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
If we take 29 away from 42, we end up with 13.
Grab the next digit (1) from the dividend, add it to 13, then carry on: 131 / 29

On to step 3:
The number 29 fits into 131 4 times, leaving a remainder of 15.
The next digit of our result is 4. 
Result so far: 14.0
Subtract 116 from 131 to get 15.
Bring next digit (9) of the dividend behind the 15 and repeat the process: 159 / 29

Step 4:
159 divided by 29 is 5 with a remainder of 14.
The number 5 becomes the next digit in our result. 
Result so far: 145.0
Subtract 145 from 159 to get 14.
Take the next digit (0) from the dividend and append it to 14, then repeat: 140 / 29

Let's proceed to step 5:
The number 29 fits into 140 4 times, leaving a remainder of 24.
The next digit of our result is 4. 
Result so far: 1454.0
Subtract 116 from 140 to get 24.
Include the next digit (7) from the dividend after 24, then repeat: 247 / 29

Going ahead to step 6:
The number 29 fits into 247 8 times, leaving a remainder of 15.
The next digit of our result is 8. 
Result so far: 14548.0
The remainder is 15 after subtracting 232 from 247.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Going ahead to step 7:
150 divided by 29 is 5 with a remainder of 5.
Use 5 as the next digit of our solution. 
Result so far: 14548.5
Deduct 145 from 150 and we're left with 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Moving on to step 8:
If we divide 50 by 29, we get 1 and a remainder of 21.
The next digit of our result is 1. 
Result so far: 14548.51
Deduct 29 from 50 and we're left with 21.
Since there are no more digits in the dividend, we add a zero to the remainder making it 210, and continue the process.

Advancing to step 9:
The number 29 fits into 210 7 times, leaving a remainder of 7.
Use 7 as the next digit of our solution. 
Result so far: 14548.517
Deduct 203 from 210 and we're left with 7.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

On to step 10:
If we divide 70 by 29, we get 2 and a remainder of 12.
Use 2 as the next digit of our solution. 
Result so far: 14548.5172
If we subtract 58 from 70, we get 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Advancing to step 11:
29 goes into 120 4 times with a remainder of 4.
Record the quotient 4 as the next digit in the result. 
Result so far: 14548.51724
The remainder is 4 after subtracting 116 from 120.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Step 12:
29 can be fit into 40 1 times, resulting in a remainder of 11.
Write down 1 as next digit of the result. 
Result so far: 14548.517241
If we subtract 29 from 40, we get 11.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

Advancing to step 13:
The number 29 fits into 110 3 times, leaving a remainder of 23.
Put 3 as the next digit of the answer. 
Result so far: 14548.5172413
The remainder is 23 after subtracting 87 from 110.
Since there are no more digits in the dividend, we add a zero to the remainder making it 230, and continue the process.

Step 14:
If we divide 230 by 29, we get 7 and a remainder of 27.
Write down 7 as next digit of the result. 
Result so far: 14548.51724137
Subtracting 203 from 230 leaves us with 27.
Since there are no more digits in the dividend, we add a zero to the remainder making it 270, and continue the process.

The final outcome is 14548.51724137, with a leftover of 2.7e-08.