We look at the division of 3748123 by 451 
We want to divide 3748123 by 451.

Going ahead to step 1:
451 goes into 3 0 times with a remainder of 3.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 3 after subtracting 0 from 3.
Append the next digit (7) from the dividend to 3 and continue with: 37 / 451

Moving on to step 2:
451 goes into 37 0 times with a remainder of 37.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 37 after subtracting 0 from 37.
Take the next digit (4) from the dividend and append it to 37, then repeat: 374 / 451

Let's proceed to step 3:
374 divided by 451 is 0 with a remainder of 374.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 374, we get 374.
Include the next digit (8) from the dividend after 374, then repeat: 3748 / 451

Let's proceed to step 4:
If we divide 3748 by 451, we get 8 and a remainder of 140.
Put 8 as the next digit of the answer. 
Result so far: 8.0
If we take 3608 away from 3748, we end up with 140.
Include the next digit (1) from the dividend after 140, then repeat: 1401 / 451

Going ahead to step 5:
451 can be fit into 1401 3 times, resulting in a remainder of 48.
Write down 3 as next digit of the result. 
Result so far: 83.0
Subtract 1353 from 1401 to get 48.
Grab the next digit (2) from the dividend, add it to 48, then carry on: 482 / 451

Let's proceed to step 6:
451 goes into 482 1 times with a remainder of 31.
The number 1 becomes the next digit in our result. 
Result so far: 831.0
If we take 451 away from 482, we end up with 31.
Bring next digit (3) of the dividend behind the 31 and repeat the process: 313 / 451

On to step 7:
313 divided by 451 is 0 with a remainder of 313.
The number 0 becomes the next digit in our result. 
Result so far: 8310.0
The remainder is 313 after subtracting 0 from 313.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3130, and continue the process.

On to step 8:
If we divide 3130 by 451, we get 6 and a remainder of 424.
Put 6 as the next digit of the answer. 
Result so far: 8310.6
If we subtract 2706 from 3130, we get 424.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4240, and continue the process.

Advancing to step 9:
If we divide 4240 by 451, we get 9 and a remainder of 181.
The next digit of our result is 9. 
Result so far: 8310.69
If we take 4059 away from 4240, we end up with 181.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1810, and continue the process.

Going ahead to step 10:
451 goes into 1810 4 times with a remainder of 6.
Use 4 as the next digit of our solution. 
Result so far: 8310.694
Subtract 1804 from 1810 to get 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Advancing to step 11:
If we divide 60 by 451, we get 0 and a remainder of 60.
Write down 0 as next digit of the result. 
Result so far: 8310.694
If we take 0 away from 60, we end up with 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

On to step 12:
451 can be fit into 600 1 times, resulting in a remainder of 149.
Put 1 as the next digit of the answer. 
Result so far: 8310.69401
Deduct 451 from 600 and we're left with 149.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1490, and continue the process.

Going ahead to step 13:
The number 451 fits into 1490 3 times, leaving a remainder of 137.
Record the quotient 3 as the next digit in the result. 
Result so far: 8310.694013
Subtracting 1353 from 1490 leaves us with 137.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1370, and continue the process.

Step 14:
451 goes into 1370 3 times with a remainder of 17.
The next digit of our result is 3. 
Result so far: 8310.6940133
Subtract 1353 from 1370 to get 17.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

In conclusion, the division gives 8310.6940133 with a balance of 1.7e-07.