We're dividing 77469455 by 400 
We want to figure out the number of times 77469455 can be divided by 400.

On to step 1:
The number 400 fits into 7 0 times, leaving a remainder of 7.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 7, we get 7.
Grab the next digit (7) from the dividend, add it to 7, then carry on: 77 / 400

Moving on to step 2:
400 can be fit into 77 0 times, resulting in a remainder of 77.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 77 to get 77.
Include the next digit (4) from the dividend after 77, then repeat: 774 / 400

Moving on to step 3:
The number 400 fits into 774 1 times, leaving a remainder of 374.
Use 1 as the next digit of our solution. 
Result so far: 1.0
Subtracting 400 from 774 leaves us with 374.
Append the next digit (6) from the dividend to 374 and continue with: 3746 / 400

Let's proceed to step 4:
400 can be fit into 3746 9 times, resulting in a remainder of 146.
The next digit of our result is 9. 
Result so far: 19.0
The remainder is 146 after subtracting 3600 from 3746.
Fetch the next digit (9) from the dividend, attach it to 146 and continue: 1469 / 400

Advancing to step 5:
400 can be fit into 1469 3 times, resulting in a remainder of 269.
The number 3 becomes the next digit in our result. 
Result so far: 193.0
The remainder is 269 after subtracting 1200 from 1469.
Take the next digit (4) from the dividend and append it to 269, then repeat: 2694 / 400

Going ahead to step 6:
When dividing 2694 by 400, we get 6 with a remainder of 294.
Use 6 as the next digit of our solution. 
Result so far: 1936.0
The remainder is 294 after subtracting 2400 from 2694.
Grab the next digit (5) from the dividend, add it to 294, then carry on: 2945 / 400

Let's proceed to step 7:
If we divide 2945 by 400, we get 7 and a remainder of 145.
Put 7 as the next digit of the answer. 
Result so far: 19367.0
If we take 2800 away from 2945, we end up with 145.
Append the next digit (5) from the dividend to 145 and continue with: 1455 / 400

On to step 8:
400 can be fit into 1455 3 times, resulting in a remainder of 255.
Write down 3 as next digit of the result. 
Result so far: 193673.0
The remainder is 255 after subtracting 1200 from 1455.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2550, and continue the process.

Going ahead to step 9:
400 can be fit into 2550 6 times, resulting in a remainder of 150.
Use 6 as the next digit of our solution. 
Result so far: 193673.6
The remainder is 150 after subtracting 2400 from 2550.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1500, and continue the process.

Step 10:
400 goes into 1500 3 times with a remainder of 300.
The next digit of our result is 3. 
Result so far: 193673.63
The remainder is 300 after subtracting 1200 from 1500.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3000, and continue the process.

Advancing to step 11:
3000 divided by 400 is 7 with a remainder of 200.
The number 7 becomes the next digit in our result. 
Result so far: 193673.637
Deduct 2800 from 3000 and we're left with 200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2000, and continue the process.

Moving on to step 12:
The number 400 fits into 2000 5 times, leaving a remainder of 0.
Write down 5 as next digit of the result. 
Result so far: 193673.6375
If we subtract 2000 from 2000, we get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

On to step 13:
0 divided by 400 is 0 with a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 193673.6375
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.
Record the quotient 0 as the next digit in the result. 
Result so far: 193673.6375
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 final result is 193673.6375 with a remainder of 0.0.