42537 divided by 1 
The aim is to understand the frequency of 1 in 42537.

Advancing to step 1:
The number 1 fits into 4 4 times, leaving a remainder of 0.
Use 4 as the next digit of our solution. 
Result so far: 4.0
Subtract 4 from 4 to get 0.
Include the next digit (2) from the dividend after 0, then repeat: 2 / 1

Going ahead to step 2:
The number 1 fits into 2 2 times, leaving a remainder of 0.
The next digit of our result is 2. 
Result so far: 42.0
If we take 2 away from 2, we end up with 0.
Grab the next digit (5) from the dividend, add it to 0, then carry on: 5 / 1

On to step 3:
5 divided by 1 is 5 with a remainder of 0.
Use 5 as the next digit of our solution. 
Result so far: 425.0
The remainder is 0 after subtracting 5 from 5.
Bring next digit (3) of the dividend behind the 0 and repeat the process: 3 / 1

Moving on to step 4:
3 divided by 1 is 3 with a remainder of 0.
The number 3 becomes the next digit in our result. 
Result so far: 4253.0
The remainder is 0 after subtracting 3 from 3.
Bring next digit (7) of the dividend behind the 0 and repeat the process: 7 / 1

Step 5:
1 goes into 7 7 times with a remainder of 0.
Put 7 as the next digit of the answer. 
Result so far: 42537.0
Deduct 7 from 7 and we're left with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Step 6:
0 divided by 1 is 0 with a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 42537.0
If we take 0 away from 0, we end up with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Going ahead to step 7:
If we divide 0 by 1, we get 0 and a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 42537.0
Subtracting 0 from 0 leaves us with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

The final outcome is 42537.0, with a leftover of 0.0.