87661958 ÷ 408 
The aim is to understand the frequency of 408 in 87661958.

On to step 1:
408 can be fit into 8 0 times, resulting in a remainder of 8.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 8, we get 8.
Append the next digit (7) from the dividend to 8 and continue with: 87 / 408

Step 2:
87 divided by 408 is 0 with a remainder of 87.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 87, we end up with 87.
Include the next digit (6) from the dividend after 87, then repeat: 876 / 408

Let's proceed to step 3:
When dividing 876 by 408, we get 2 with a remainder of 60.
Write down 2 as next digit of the result. 
Result so far: 2.0
The remainder is 60 after subtracting 816 from 876.
Grab the next digit (6) from the dividend, add it to 60, then carry on: 606 / 408

Step 4:
If we divide 606 by 408, we get 1 and a remainder of 198.
Use 1 as the next digit of our solution. 
Result so far: 21.0
The remainder is 198 after subtracting 408 from 606.
Bring next digit (1) of the dividend behind the 198 and repeat the process: 1981 / 408

Step 5:
The number 408 fits into 1981 4 times, leaving a remainder of 349.
The next digit of our result is 4. 
Result so far: 214.0
If we take 1632 away from 1981, we end up with 349.
Bring next digit (9) of the dividend behind the 349 and repeat the process: 3499 / 408

Step 6:
408 goes into 3499 8 times with a remainder of 235.
The number 8 becomes the next digit in our result. 
Result so far: 2148.0
Subtract 3264 from 3499 to get 235.
Include the next digit (5) from the dividend after 235, then repeat: 2355 / 408

Advancing to step 7:
408 goes into 2355 5 times with a remainder of 315.
The next digit of our result is 5. 
Result so far: 21485.0
Subtract 2040 from 2355 to get 315.
Take the next digit (8) from the dividend and append it to 315, then repeat: 3158 / 408

Moving on to step 8:
If we divide 3158 by 408, we get 7 and a remainder of 302.
Record the quotient 7 as the next digit in the result. 
Result so far: 214857.0
Subtracting 2856 from 3158 leaves us with 302.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3020, and continue the process.

Step 9:
3020 divided by 408 is 7 with a remainder of 164.
The number 7 becomes the next digit in our result. 
Result so far: 214857.7
If we take 2856 away from 3020, we end up with 164.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1640, and continue the process.

Let's proceed to step 10:
The number 408 fits into 1640 4 times, leaving a remainder of 8.
Use 4 as the next digit of our solution. 
Result so far: 214857.74
Deduct 1632 from 1640 and we're left with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Going ahead to step 11:
408 can be fit into 80 0 times, resulting in a remainder of 80.
The next digit of our result is 0. 
Result so far: 214857.74
If we subtract 0 from 80, we get 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

Going ahead to step 12:
408 goes into 800 1 times with a remainder of 392.
Write down 1 as next digit of the result. 
Result so far: 214857.7401
Subtract 408 from 800 to get 392.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3920, and continue the process.

Let's proceed to step 13:
When dividing 3920 by 408, we get 9 with a remainder of 248.
Write down 9 as next digit of the result. 
Result so far: 214857.74019
Subtracting 3672 from 3920 leaves us with 248.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2480, and continue the process.

Going ahead to step 14:
408 goes into 2480 6 times with a remainder of 32.
Use 6 as the next digit of our solution. 
Result so far: 214857.740196
The remainder is 32 after subtracting 2448 from 2480.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

Step 15:
If we divide 320 by 408, we get 0 and a remainder of 320.
Use 0 as the next digit of our solution. 
Result so far: 214857.740196
If we take 0 away from 320, we end up with 320.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3200, and continue the process.

Advancing to step 16:
The number 408 fits into 3200 7 times, leaving a remainder of 344.
Write down 7 as next digit of the result. 
Result so far: 214857.74019607
The remainder is 344 after subtracting 2856 from 3200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3440, and continue the process.

The quotient of the division is 214857.74019607, and the remainder is 3.44e-07.