We're dividing 35070043 by 561 
The aim is to understand the frequency of 561 in 35070043.

Let's proceed to step 1:
3 divided by 561 is 0 with a remainder of 3.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 3 and we're left with 3.
Bring next digit (5) of the dividend behind the 3 and repeat the process: 35 / 561

Going ahead to step 2:
If we divide 35 by 561, we get 0 and a remainder of 35.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 35 to get 35.
Grab the next digit (0) from the dividend, add it to 35, then carry on: 350 / 561

On to step 3:
If we divide 350 by 561, we get 0 and a remainder of 350.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 350 to get 350.
Fetch the next digit (7) from the dividend, attach it to 350 and continue: 3507 / 561

Advancing to step 4:
561 goes into 3507 6 times with a remainder of 141.
The next digit of our result is 6. 
Result so far: 6.0
Deduct 3366 from 3507 and we're left with 141.
Bring next digit (0) of the dividend behind the 141 and repeat the process: 1410 / 561

Going ahead to step 5:
If we divide 1410 by 561, we get 2 and a remainder of 288.
Record the quotient 2 as the next digit in the result. 
Result so far: 62.0
If we take 1122 away from 1410, we end up with 288.
Bring next digit (0) of the dividend behind the 288 and repeat the process: 2880 / 561

Step 6:
561 can be fit into 2880 5 times, resulting in a remainder of 75.
The next digit of our result is 5. 
Result so far: 625.0
If we take 2805 away from 2880, we end up with 75.
Include the next digit (4) from the dividend after 75, then repeat: 754 / 561

On to step 7:
When dividing 754 by 561, we get 1 with a remainder of 193.
Write down 1 as next digit of the result. 
Result so far: 6251.0
The remainder is 193 after subtracting 561 from 754.
Grab the next digit (3) from the dividend, add it to 193, then carry on: 1933 / 561

Going ahead to step 8:
When dividing 1933 by 561, we get 3 with a remainder of 250.
Use 3 as the next digit of our solution. 
Result so far: 62513.0
Subtract 1683 from 1933 to get 250.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2500, and continue the process.

Going ahead to step 9:
If we divide 2500 by 561, we get 4 and a remainder of 256.
Use 4 as the next digit of our solution. 
Result so far: 62513.4
Subtract 2244 from 2500 to get 256.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2560, and continue the process.

Going ahead to step 10:
The number 561 fits into 2560 4 times, leaving a remainder of 316.
The number 4 becomes the next digit in our result. 
Result so far: 62513.44
If we take 2244 away from 2560, we end up with 316.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3160, and continue the process.

Our division results in 62513.44 with a remaining 0.316.