We look at the division of 3121348 by 429 
We want to figure out the number of times 3121348 can be divided by 429.

Step 1:
The number 429 fits into 3 0 times, leaving a remainder of 3.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 3 and we're left with 3.
Grab the next digit (1) from the dividend, add it to 3, then carry on: 31 / 429

Step 2:
429 goes into 31 0 times with a remainder of 31.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 31 after subtracting 0 from 31.
Fetch the next digit (2) from the dividend, attach it to 31 and continue: 312 / 429

Let's proceed to step 3:
429 can be fit into 312 0 times, resulting in a remainder of 312.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 312, we get 312.
Bring next digit (1) of the dividend behind the 312 and repeat the process: 3121 / 429

Going ahead to step 4:
The number 429 fits into 3121 7 times, leaving a remainder of 118.
The next digit of our result is 7. 
Result so far: 7.0
If we subtract 3003 from 3121, we get 118.
Append the next digit (3) from the dividend to 118 and continue with: 1183 / 429

Advancing to step 5:
The number 429 fits into 1183 2 times, leaving a remainder of 325.
Write down 2 as next digit of the result. 
Result so far: 72.0
Deduct 858 from 1183 and we're left with 325.
Bring next digit (4) of the dividend behind the 325 and repeat the process: 3254 / 429

Advancing to step 6:
When dividing 3254 by 429, we get 7 with a remainder of 251.
The next digit of our result is 7. 
Result so far: 727.0
If we take 3003 away from 3254, we end up with 251.
Bring next digit (8) of the dividend behind the 251 and repeat the process: 2518 / 429

Let's proceed to step 7:
The number 429 fits into 2518 5 times, leaving a remainder of 373.
The next digit of our result is 5. 
Result so far: 7275.0
If we subtract 2145 from 2518, we get 373.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3730, and continue the process.

Step 8:
3730 divided by 429 is 8 with a remainder of 298.
Record the quotient 8 as the next digit in the result. 
Result so far: 7275.8
Subtract 3432 from 3730 to get 298.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2980, and continue the process.

On to step 9:
429 goes into 2980 6 times with a remainder of 406.
Write down 6 as next digit of the result. 
Result so far: 7275.86
The remainder is 406 after subtracting 2574 from 2980.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4060, and continue the process.

Moving on to step 10:
4060 divided by 429 is 9 with a remainder of 199.
Put 9 as the next digit of the answer. 
Result so far: 7275.869
The remainder is 199 after subtracting 3861 from 4060.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1990, and continue the process.

Going ahead to step 11:
When dividing 1990 by 429, we get 4 with a remainder of 274.
Write down 4 as next digit of the result. 
Result so far: 7275.8694
If we subtract 1716 from 1990, we get 274.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2740, and continue the process.

Moving on to step 12:
2740 divided by 429 is 6 with a remainder of 166.
Write down 6 as next digit of the result. 
Result so far: 7275.86946
If we subtract 2574 from 2740, we get 166.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1660, and continue the process.

Moving on to step 13:
429 can be fit into 1660 3 times, resulting in a remainder of 373.
The number 3 becomes the next digit in our result. 
Result so far: 7275.869463
If we subtract 1287 from 1660, we get 373.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3730, and continue the process.

Moving on to step 14:
When dividing 3730 by 429, we get 8 with a remainder of 298.
The next digit of our result is 8. 
Result so far: 7275.8694638
Subtracting 3432 from 3730 leaves us with 298.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2980, and continue the process.

Moving on to step 15:
If we divide 2980 by 429, we get 6 and a remainder of 406.
Use 6 as the next digit of our solution. 
Result so far: 7275.86946386
If we subtract 2574 from 2980, we get 406.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4060, and continue the process.

Our division results in 7275.86946386 with a remaining 4.06e-07.