426620 ÷ 87 
The aim is to understand the frequency of 87 in 426620.

Going ahead to step 1:
4 divided by 87 is 0 with a remainder of 4.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 4 to get 4.
Take the next digit (2) from the dividend and append it to 4, then repeat: 42 / 87

Going ahead to step 2:
87 goes into 42 0 times with a remainder of 42.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 42, we end up with 42.
Take the next digit (6) from the dividend and append it to 42, then repeat: 426 / 87

Advancing to step 3:
87 goes into 426 4 times with a remainder of 78.
Put 4 as the next digit of the answer. 
Result so far: 4.0
If we take 348 away from 426, we end up with 78.
Take the next digit (6) from the dividend and append it to 78, then repeat: 786 / 87

Let's proceed to step 4:
87 goes into 786 9 times with a remainder of 3.
Record the quotient 9 as the next digit in the result. 
Result so far: 49.0
If we subtract 783 from 786, we get 3.
Grab the next digit (2) from the dividend, add it to 3, then carry on: 32 / 87

On to step 5:
If we divide 32 by 87, we get 0 and a remainder of 32.
Write down 0 as next digit of the result. 
Result so far: 490.0
Subtract 0 from 32 to get 32.
Take the next digit (0) from the dividend and append it to 32, then repeat: 320 / 87

Going ahead to step 6:
87 can be fit into 320 3 times, resulting in a remainder of 59.
Use 3 as the next digit of our solution. 
Result so far: 4903.0
Subtract 261 from 320 to get 59.
Since there are no more digits in the dividend, we add a zero to the remainder making it 590, and continue the process.

Let's proceed to step 7:
590 divided by 87 is 6 with a remainder of 68.
The number 6 becomes the next digit in our result. 
Result so far: 4903.6
Subtracting 522 from 590 leaves us with 68.
Since there are no more digits in the dividend, we add a zero to the remainder making it 680, and continue the process.

Advancing to step 8:
If we divide 680 by 87, we get 7 and a remainder of 71.
The number 7 becomes the next digit in our result. 
Result so far: 4903.67
If we take 609 away from 680, we end up with 71.
Since there are no more digits in the dividend, we add a zero to the remainder making it 710, and continue the process.

Going ahead to step 9:
If we divide 710 by 87, we get 8 and a remainder of 14.
The number 8 becomes the next digit in our result. 
Result so far: 4903.678
If we subtract 696 from 710, we get 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

Step 10:
When dividing 140 by 87, we get 1 with a remainder of 53.
The number 1 becomes the next digit in our result. 
Result so far: 4903.6781
If we take 87 away from 140, we end up with 53.
Since there are no more digits in the dividend, we add a zero to the remainder making it 530, and continue the process.

Advancing to step 11:
The number 87 fits into 530 6 times, leaving a remainder of 8.
The number 6 becomes the next digit in our result. 
Result so far: 4903.67816
Deduct 522 from 530 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.

Advancing to step 12:
When dividing 80 by 87, we get 0 with a remainder of 80.
Put 0 as the next digit of the answer. 
Result so far: 4903.67816
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.

On to step 13:
87 can be fit into 800 9 times, resulting in a remainder of 17.
The next digit of our result is 9. 
Result so far: 4903.6781609
Deduct 783 from 800 and we're left with 17.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

On to step 14:
The number 87 fits into 170 1 times, leaving a remainder of 83.
The number 1 becomes the next digit in our result. 
Result so far: 4903.67816091
If we take 87 away from 170, we end up with 83.
Since there are no more digits in the dividend, we add a zero to the remainder making it 830, and continue the process.

Our division results in 4903.67816091 with a remaining 8.3e-08.