18697661 ÷ 400 
We want to figure out the number of times 18697661 can be divided by 400.

Step 1:
If we divide 1 by 400, we get 0 and a remainder of 1.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 1, we end up with 1.
Grab the next digit (8) from the dividend, add it to 1, then carry on: 18 / 400

Advancing to step 2:
When dividing 18 by 400, we get 0 with a remainder of 18.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 18 to get 18.
Grab the next digit (6) from the dividend, add it to 18, then carry on: 186 / 400

Advancing to step 3:
The number 400 fits into 186 0 times, leaving a remainder of 186.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 186 and we're left with 186.
Grab the next digit (9) from the dividend, add it to 186, then carry on: 1869 / 400

Let's proceed to step 4:
The number 400 fits into 1869 4 times, leaving a remainder of 269.
The next digit of our result is 4. 
Result so far: 4.0
Deduct 1600 from 1869 and we're left with 269.
Include the next digit (7) from the dividend after 269, then repeat: 2697 / 400

On to step 5:
The number 400 fits into 2697 6 times, leaving a remainder of 297.
Put 6 as the next digit of the answer. 
Result so far: 46.0
Subtract 2400 from 2697 to get 297.
Grab the next digit (6) from the dividend, add it to 297, then carry on: 2976 / 400

Step 6:
The number 400 fits into 2976 7 times, leaving a remainder of 176.
The next digit of our result is 7. 
Result so far: 467.0
If we take 2800 away from 2976, we end up with 176.
Include the next digit (6) from the dividend after 176, then repeat: 1766 / 400

Moving on to step 7:
400 can be fit into 1766 4 times, resulting in a remainder of 166.
Record the quotient 4 as the next digit in the result. 
Result so far: 4674.0
Deduct 1600 from 1766 and we're left with 166.
Grab the next digit (1) from the dividend, add it to 166, then carry on: 1661 / 400

Step 8:
400 goes into 1661 4 times with a remainder of 61.
Write down 4 as next digit of the result. 
Result so far: 46744.0
Deduct 1600 from 1661 and we're left with 61.
Since there are no more digits in the dividend, we add a zero to the remainder making it 610, and continue the process.

On to step 9:
400 can be fit into 610 1 times, resulting in a remainder of 210.
Write down 1 as next digit of the result. 
Result so far: 46744.1
The remainder is 210 after subtracting 400 from 610.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2100, and continue the process.

Let's proceed to step 10:
If we divide 2100 by 400, we get 5 and a remainder of 100.
Record the quotient 5 as the next digit in the result. 
Result so far: 46744.15
Subtracting 2000 from 2100 leaves us with 100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1000, and continue the process.

Advancing to step 11:
400 goes into 1000 2 times with a remainder of 200.
Put 2 as the next digit of the answer. 
Result so far: 46744.152
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.

Moving on to step 12:
2000 divided by 400 is 5 with a remainder of 0.
Put 5 as the next digit of the answer. 
Result so far: 46744.1525
Deduct 2000 from 2000 and we're left 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:
400 goes into 0 0 times with a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 46744.1525
Subtracting 0 from 0 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 14:
0 divided by 400 is 0 with a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 46744.1525
If we subtract 0 from 0, 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.

The final outcome is 46744.1525, with a leftover of 0.0.