Let's divide 128932 by 420
Let's see how many times 420 fits into 128932.

Step 1:
The number 420 fits into 1 0 times, leaving a remainder of 1.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 1 after subtracting 0 from 1.
Append the next digit (2) from the dividend to 1 and continue with: 12 / 420

Moving on to step 2:
If we divide 12 by 420, we get 0 and a remainder of 12.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 12 to get 12.
Take the next digit (8) from the dividend and append it to 12, then repeat: 128 / 420

Moving on to step 3:
The number 420 fits into 128 0 times, leaving a remainder of 128.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 128 leaves us with 128.
Fetch the next digit (9) from the dividend, attach it to 128 and continue: 1289 / 420

Step 4:
If we divide 1289 by 420, we get 3 and a remainder of 29.
Use 3 as the next digit of our solution. 
Result so far: 3.0
Subtract 1260 from 1289 to get 29.
Take the next digit (3) from the dividend and append it to 29, then repeat: 293 / 420

Going ahead to step 5:
If we divide 293 by 420, we get 0 and a remainder of 293.
Write down 0 as next digit of the result. 
Result so far: 30.0
Subtract 0 from 293 to get 293.
Include the next digit (2) from the dividend after 293, then repeat: 2932 / 420

Advancing to step 6:
2932 divided by 420 is 6 with a remainder of 412.
Use 6 as the next digit of our solution. 
Result so far: 306.0
If we take 2520 away from 2932, we end up with 412.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4120, and continue the process.

Going ahead to step 7:
If we divide 4120 by 420, we get 9 and a remainder of 340.
Use 9 as the next digit of our solution. 
Result so far: 306.9
The remainder is 340 after subtracting 3780 from 4120.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3400, and continue the process.

Going ahead to step 8:
The number 420 fits into 3400 8 times, leaving a remainder of 40.
Record the quotient 8 as the next digit in the result. 
Result so far: 306.98
Deduct 3360 from 3400 and we're left with 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Going ahead to step 9:
When dividing 400 by 420, we get 0 with a remainder of 400.
Record the quotient 0 as the next digit in the result. 
Result so far: 306.98
If we take 0 away from 400, we end up with 400.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4000, and continue the process.

Step 10:
420 can be fit into 4000 9 times, resulting in a remainder of 220.
Write down 9 as next digit of the result. 
Result so far: 306.9809
Subtracting 3780 from 4000 leaves us with 220.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2200, and continue the process.

Let's proceed to step 11:
2200 divided by 420 is 5 with a remainder of 100.
Use 5 as the next digit of our solution. 
Result so far: 306.98095
Subtracting 2100 from 2200 leaves us with 100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1000, and continue the process.

On to step 12:
The number 420 fits into 1000 2 times, leaving a remainder of 160.
The next digit of our result is 2. 
Result so far: 306.980952
Deduct 840 from 1000 and we're left with 160.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1600, and continue the process.

Going ahead to step 13:
The number 420 fits into 1600 3 times, leaving a remainder of 340.
Put 3 as the next digit of the answer. 
Result so far: 306.9809523
If we take 1260 away from 1600, we end up with 340.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3400, and continue the process.

Let's proceed to step 14:
420 goes into 3400 8 times with a remainder of 40.
The number 8 becomes the next digit in our result. 
Result so far: 306.98095238
If we take 3360 away from 3400, we end up with 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

The final result is 306.98095238 with a remainder of 4e-08.