86178953 ÷ 400 
Let's see how many times 400 fits into 86178953.

Going ahead to step 1:
400 can be fit into 8 0 times, resulting in a remainder of 8.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 8, we get 8.
Grab the next digit (6) from the dividend, add it to 8, then carry on: 86 / 400

Advancing to step 2:
86 divided by 400 is 0 with a remainder of 86.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 86, we get 86.
Grab the next digit (1) from the dividend, add it to 86, then carry on: 861 / 400

Advancing to step 3:
When dividing 861 by 400, we get 2 with a remainder of 61.
The next digit of our result is 2. 
Result so far: 2.0
The remainder is 61 after subtracting 800 from 861.
Take the next digit (7) from the dividend and append it to 61, then repeat: 617 / 400

Advancing to step 4:
The number 400 fits into 617 1 times, leaving a remainder of 217.
Put 1 as the next digit of the answer. 
Result so far: 21.0
If we take 400 away from 617, we end up with 217.
Include the next digit (8) from the dividend after 217, then repeat: 2178 / 400

Going ahead to step 5:
400 goes into 2178 5 times with a remainder of 178.
Use 5 as the next digit of our solution. 
Result so far: 215.0
If we take 2000 away from 2178, we end up with 178.
Bring next digit (9) of the dividend behind the 178 and repeat the process: 1789 / 400

Going ahead to step 6:
400 can be fit into 1789 4 times, resulting in a remainder of 189.
Put 4 as the next digit of the answer. 
Result so far: 2154.0
Subtract 1600 from 1789 to get 189.
Take the next digit (5) from the dividend and append it to 189, then repeat: 1895 / 400

Going ahead to step 7:
400 can be fit into 1895 4 times, resulting in a remainder of 295.
Put 4 as the next digit of the answer. 
Result so far: 21544.0
If we subtract 1600 from 1895, we get 295.
Append the next digit (3) from the dividend to 295 and continue with: 2953 / 400

On to step 8:
400 goes into 2953 7 times with a remainder of 153.
Write down 7 as next digit of the result. 
Result so far: 215447.0
Subtract 2800 from 2953 to get 153.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1530, and continue the process.

Going ahead to step 9:
If we divide 1530 by 400, we get 3 and a remainder of 330.
The number 3 becomes the next digit in our result. 
Result so far: 215447.3
The remainder is 330 after subtracting 1200 from 1530.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3300, and continue the process.

Moving on to step 10:
400 can be fit into 3300 8 times, resulting in a remainder of 100.
Record the quotient 8 as the next digit in the result. 
Result so far: 215447.38
The remainder is 100 after subtracting 3200 from 3300.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1000, and continue the process.

Let's proceed to step 11:
1000 divided by 400 is 2 with a remainder of 200.
Write down 2 as next digit of the result. 
Result so far: 215447.382
Subtract 800 from 1000 to get 200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2000, and continue the process.

Advancing to step 12:
When dividing 2000 by 400, we get 5 with a remainder of 0.
The next digit of our result is 5. 
Result so far: 215447.3825
Subtracting 2000 from 2000 leaves us with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Moving on to step 13:
The number 400 fits into 0 0 times, leaving a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 215447.3825
If we take 0 away from 0, we end up with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Let's proceed to step 14:
The number 400 fits into 0 0 times, leaving a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 215447.3825
If we take 0 away from 0, we end up with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

The quotient of the division is 215447.3825, and the remainder is 0.0.