Let's divide 86374399 by 401
We want to divide 86374399 by 401.

Let's proceed to step 1:
401 goes into 8 0 times with a remainder of 8.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 8, we get 8.
Append the next digit (6) from the dividend to 8 and continue with: 86 / 401

On to step 2:
401 goes into 86 0 times with a remainder of 86.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 86 to get 86.
Grab the next digit (3) from the dividend, add it to 86, then carry on: 863 / 401

On to step 3:
863 divided by 401 is 2 with a remainder of 61.
The next digit of our result is 2. 
Result so far: 2.0
Deduct 802 from 863 and we're left with 61.
Include the next digit (7) from the dividend after 61, then repeat: 617 / 401

Moving on to step 4:
401 goes into 617 1 times with a remainder of 216.
Use 1 as the next digit of our solution. 
Result so far: 21.0
If we subtract 401 from 617, we get 216.
Grab the next digit (4) from the dividend, add it to 216, then carry on: 2164 / 401

Let's proceed to step 5:
2164 divided by 401 is 5 with a remainder of 159.
Use 5 as the next digit of our solution. 
Result so far: 215.0
If we take 2005 away from 2164, we end up with 159.
Include the next digit (3) from the dividend after 159, then repeat: 1593 / 401

Let's proceed to step 6:
If we divide 1593 by 401, we get 3 and a remainder of 390.
The next digit of our result is 3. 
Result so far: 2153.0
Subtracting 1203 from 1593 leaves us with 390.
Grab the next digit (9) from the dividend, add it to 390, then carry on: 3909 / 401

Moving on to step 7:
401 goes into 3909 9 times with a remainder of 300.
Use 9 as the next digit of our solution. 
Result so far: 21539.0
Subtracting 3609 from 3909 leaves us with 300.
Bring next digit (9) of the dividend behind the 300 and repeat the process: 3009 / 401

On to step 8:
401 goes into 3009 7 times with a remainder of 202.
The next digit of our result is 7. 
Result so far: 215397.0
If we subtract 2807 from 3009, we get 202.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2020, and continue the process.

Let's proceed to step 9:
401 goes into 2020 5 times with a remainder of 15.
Record the quotient 5 as the next digit in the result. 
Result so far: 215397.5
Subtract 2005 from 2020 to get 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Moving on to step 10:
401 can be fit into 150 0 times, resulting in a remainder of 150.
Use 0 as the next digit of our solution. 
Result so far: 215397.5
Subtract 0 from 150 to get 150.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1500, and continue the process.

Step 11:
The number 401 fits into 1500 3 times, leaving a remainder of 297.
The next digit of our result is 3. 
Result so far: 215397.503
Subtract 1203 from 1500 to get 297.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2970, and continue the process.

Step 12:
401 can be fit into 2970 7 times, resulting in a remainder of 163.
Record the quotient 7 as the next digit in the result. 
Result so far: 215397.5037
The remainder is 163 after subtracting 2807 from 2970.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1630, and continue the process.

Step 13:
401 can be fit into 1630 4 times, resulting in a remainder of 26.
Put 4 as the next digit of the answer. 
Result so far: 215397.50374
The remainder is 26 after subtracting 1604 from 1630.
Since there are no more digits in the dividend, we add a zero to the remainder making it 260, and continue the process.

Step 14:
260 divided by 401 is 0 with a remainder of 260.
Record the quotient 0 as the next digit in the result. 
Result so far: 215397.50374
Subtracting 0 from 260 leaves us with 260.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2600, and continue the process.

Moving on to step 15:
The number 401 fits into 2600 6 times, leaving a remainder of 194.
The next digit of our result is 6. 
Result so far: 215397.5037406
Deduct 2406 from 2600 and we're left with 194.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1940, and continue the process.

Going ahead to step 16:
If we divide 1940 by 401, we get 4 and a remainder of 336.
Record the quotient 4 as the next digit in the result. 
Result so far: 215397.50374064
If we subtract 1604 from 1940, we get 336.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3360, and continue the process.

The final result is 215397.50374064 with a remainder of 3.36e-07.