378211 divided by 87 
The aim is to understand the frequency of 87 in 378211.

Going ahead to step 1:
When dividing 3 by 87, we get 0 with a remainder of 3.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 3 leaves us with 3.
Include the next digit (7) from the dividend after 3, then repeat: 37 / 87

Advancing to step 2:
The number 87 fits into 37 0 times, leaving a remainder of 37.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 37 to get 37.
Fetch the next digit (8) from the dividend, attach it to 37 and continue: 378 / 87

Moving on to step 3:
87 can be fit into 378 4 times, resulting in a remainder of 30.
Put 4 as the next digit of the answer. 
Result so far: 4.0
If we take 348 away from 378, we end up with 30.
Bring next digit (2) of the dividend behind the 30 and repeat the process: 302 / 87

Let's proceed to step 4:
87 can be fit into 302 3 times, resulting in a remainder of 41.
The number 3 becomes the next digit in our result. 
Result so far: 43.0
Deduct 261 from 302 and we're left with 41.
Take the next digit (1) from the dividend and append it to 41, then repeat: 411 / 87

Let's proceed to step 5:
87 can be fit into 411 4 times, resulting in a remainder of 63.
Put 4 as the next digit of the answer. 
Result so far: 434.0
The remainder is 63 after subtracting 348 from 411.
Append the next digit (1) from the dividend to 63 and continue with: 631 / 87

Moving on to step 6:
The number 87 fits into 631 7 times, leaving a remainder of 22.
Use 7 as the next digit of our solution. 
Result so far: 4347.0
Subtracting 609 from 631 leaves us with 22.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

Let's proceed to step 7:
The number 87 fits into 220 2 times, leaving a remainder of 46.
Record the quotient 2 as the next digit in the result. 
Result so far: 4347.2
The remainder is 46 after subtracting 174 from 220.
Since there are no more digits in the dividend, we add a zero to the remainder making it 460, and continue the process.

On to step 8:
If we divide 460 by 87, we get 5 and a remainder of 25.
Record the quotient 5 as the next digit in the result. 
Result so far: 4347.25
Subtract 435 from 460 to get 25.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

On to step 9:
The number 87 fits into 250 2 times, leaving a remainder of 76.
Record the quotient 2 as the next digit in the result. 
Result so far: 4347.252
Subtract 174 from 250 to get 76.
Since there are no more digits in the dividend, we add a zero to the remainder making it 760, and continue the process.

Step 10:
760 divided by 87 is 8 with a remainder of 64.
Record the quotient 8 as the next digit in the result. 
Result so far: 4347.2528
Subtracting 696 from 760 leaves us with 64.
Since there are no more digits in the dividend, we add a zero to the remainder making it 640, and continue the process.

Advancing to step 11:
87 goes into 640 7 times with a remainder of 31.
Use 7 as the next digit of our solution. 
Result so far: 4347.25287
Subtract 609 from 640 to get 31.
Since there are no more digits in the dividend, we add a zero to the remainder making it 310, and continue the process.

Step 12:
87 goes into 310 3 times with a remainder of 49.
The next digit of our result is 3. 
Result so far: 4347.252873
If we take 261 away from 310, we end up with 49.
Since there are no more digits in the dividend, we add a zero to the remainder making it 490, and continue the process.

Moving on to step 13:
When dividing 490 by 87, we get 5 with a remainder of 55.
Write down 5 as next digit of the result. 
Result so far: 4347.2528735
If we take 435 away from 490, we end up with 55.
Since there are no more digits in the dividend, we add a zero to the remainder making it 550, and continue the process.

Going ahead to step 14:
If we divide 550 by 87, we get 6 and a remainder of 28.
Use 6 as the next digit of our solution. 
Result so far: 4347.25287356
Subtract 522 from 550 to get 28.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

The quotient of the division is 4347.25287356, and the remainder is 2.8e-08.