35401209 divided by 587 
The aim is to understand the frequency of 587 in 35401209.

Advancing to step 1:
3 divided by 587 is 0 with a remainder of 3.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 3 to get 3.
Grab the next digit (5) from the dividend, add it to 3, then carry on: 35 / 587

On to step 2:
587 goes into 35 0 times with a remainder of 35.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 35 to get 35.
Grab the next digit (4) from the dividend, add it to 35, then carry on: 354 / 587

Advancing to step 3:
587 goes into 354 0 times with a remainder of 354.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 354, we end up with 354.
Take the next digit (0) from the dividend and append it to 354, then repeat: 3540 / 587

On to step 4:
3540 divided by 587 is 6 with a remainder of 18.
Record the quotient 6 as the next digit in the result. 
Result so far: 6.0
Subtracting 3522 from 3540 leaves us with 18.
Take the next digit (1) from the dividend and append it to 18, then repeat: 181 / 587

Step 5:
587 goes into 181 0 times with a remainder of 181.
Use 0 as the next digit of our solution. 
Result so far: 60.0
If we subtract 0 from 181, we get 181.
Include the next digit (2) from the dividend after 181, then repeat: 1812 / 587

Moving on to step 6:
If we divide 1812 by 587, we get 3 and a remainder of 51.
Put 3 as the next digit of the answer. 
Result so far: 603.0
Subtracting 1761 from 1812 leaves us with 51.
Bring next digit (0) of the dividend behind the 51 and repeat the process: 510 / 587

Step 7:
587 goes into 510 0 times with a remainder of 510.
Use 0 as the next digit of our solution. 
Result so far: 6030.0
If we subtract 0 from 510, we get 510.
Append the next digit (9) from the dividend to 510 and continue with: 5109 / 587

Moving on to step 8:
587 can be fit into 5109 8 times, resulting in a remainder of 413.
Write down 8 as next digit of the result. 
Result so far: 60308.0
Deduct 4696 from 5109 and we're left with 413.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4130, and continue the process.

Let's proceed to step 9:
When dividing 4130 by 587, we get 7 with a remainder of 21.
The number 7 becomes the next digit in our result. 
Result so far: 60308.7
If we take 4109 away from 4130, we end up with 21.
Since there are no more digits in the dividend, we add a zero to the remainder making it 210, and continue the process.

Going ahead to step 10:
If we divide 210 by 587, we get 0 and a remainder of 210.
The next digit of our result is 0. 
Result so far: 60308.7
Subtracting 0 from 210 leaves us with 210.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2100, and continue the process.

On to step 11:
If we divide 2100 by 587, we get 3 and a remainder of 339.
Write down 3 as next digit of the result. 
Result so far: 60308.703
Subtract 1761 from 2100 to get 339.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3390, and continue the process.

Advancing to step 12:
If we divide 3390 by 587, we get 5 and a remainder of 455.
The number 5 becomes the next digit in our result. 
Result so far: 60308.7035
If we subtract 2935 from 3390, we get 455.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4550, and continue the process.

On to step 13:
587 can be fit into 4550 7 times, resulting in a remainder of 441.
The number 7 becomes the next digit in our result. 
Result so far: 60308.70357
Subtract 4109 from 4550 to get 441.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4410, and continue the process.

Let's proceed to step 14:
If we divide 4410 by 587, we get 7 and a remainder of 301.
Write down 7 as next digit of the result. 
Result so far: 60308.703577
Subtract 4109 from 4410 to get 301.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3010, and continue the process.

After the division, we end up with 60308.703577 and a remainder of 3.01e-05.