3953999 ÷ 751 
Our goal is to divide 3953999 by 751.

Moving on to step 1:
751 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
Deduct 0 from 3 and we're left with 3.
Bring next digit (9) of the dividend behind the 3 and repeat the process: 39 / 751

Step 2:
751 goes into 39 0 times with a remainder of 39.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 39, we end up with 39.
Fetch the next digit (5) from the dividend, attach it to 39 and continue: 395 / 751

On to step 3:
751 can be fit into 395 0 times, resulting in a remainder of 395.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 395, we get 395.
Grab the next digit (3) from the dividend, add it to 395, then carry on: 3953 / 751

On to step 4:
When dividing 3953 by 751, we get 5 with a remainder of 198.
Write down 5 as next digit of the result. 
Result so far: 5.0
If we subtract 3755 from 3953, we get 198.
Fetch the next digit (9) from the dividend, attach it to 198 and continue: 1989 / 751

Advancing to step 5:
The number 751 fits into 1989 2 times, leaving a remainder of 487.
Write down 2 as next digit of the result. 
Result so far: 52.0
Subtract 1502 from 1989 to get 487.
Include the next digit (9) from the dividend after 487, then repeat: 4879 / 751

Going ahead to step 6:
751 goes into 4879 6 times with a remainder of 373.
Use 6 as the next digit of our solution. 
Result so far: 526.0
If we subtract 4506 from 4879, we get 373.
Take the next digit (9) from the dividend and append it to 373, then repeat: 3739 / 751

Advancing to step 7:
When dividing 3739 by 751, we get 4 with a remainder of 735.
Put 4 as the next digit of the answer. 
Result so far: 5264.0
Deduct 3004 from 3739 and we're left with 735.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7350, and continue the process.

Moving on to step 8:
When dividing 7350 by 751, we get 9 with a remainder of 591.
Put 9 as the next digit of the answer. 
Result so far: 5264.9
If we subtract 6759 from 7350, we get 591.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5910, and continue the process.

Advancing to step 9:
5910 divided by 751 is 7 with a remainder of 653.
Use 7 as the next digit of our solution. 
Result so far: 5264.97
Subtract 5257 from 5910 to get 653.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6530, and continue the process.

On to step 10:
6530 divided by 751 is 8 with a remainder of 522.
The number 8 becomes the next digit in our result. 
Result so far: 5264.978
The remainder is 522 after subtracting 6008 from 6530.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5220, and continue the process.

Let's proceed to step 11:
751 can be fit into 5220 6 times, resulting in a remainder of 714.
The number 6 becomes the next digit in our result. 
Result so far: 5264.9786
Subtract 4506 from 5220 to get 714.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7140, and continue the process.

Step 12:
When dividing 7140 by 751, we get 9 with a remainder of 381.
Put 9 as the next digit of the answer. 
Result so far: 5264.97869
Subtract 6759 from 7140 to get 381.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3810, and continue the process.

Let's proceed to step 13:
751 can be fit into 3810 5 times, resulting in a remainder of 55.
The number 5 becomes the next digit in our result. 
Result so far: 5264.978695
Subtracting 3755 from 3810 leaves us with 55.
Since there are no more digits in the dividend, we add a zero to the remainder making it 550, and continue the process.

On to step 14:
When dividing 550 by 751, we get 0 with a remainder of 550.
Record the quotient 0 as the next digit in the result. 
Result so far: 5264.978695
Subtract 0 from 550 to get 550.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5500, and continue the process.

Moving on to step 15:
5500 divided by 751 is 7 with a remainder of 243.
Record the quotient 7 as the next digit in the result. 
Result so far: 5264.97869507
Deduct 5257 from 5500 and we're left with 243.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2430, and continue the process.

Our division results in 5264.97869507 with a remaining 2.43e-07.