We divide 210525 by 1
We're looking to find how many times 1 goes into 210525.

Step 1:
2 divided by 1 is 2 with a remainder of 0.
Put 2 as the next digit of the answer. 
Result so far: 2.0
If we take 2 away from 2, we end up with 0.
Take the next digit (1) from the dividend and append it to 0, then repeat: 1 / 1

Step 2:
If we divide 1 by 1, we get 1 and a remainder of 0.
Use 1 as the next digit of our solution. 
Result so far: 21.0
Subtract 1 from 1 to get 0.
Append the next digit (0) from the dividend to 0 and continue with: 0 / 1

Step 3:
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: 210.0
If we take 0 away from 0, we end up with 0.
Append the next digit (5) from the dividend to 0 and continue with: 5 / 1

Moving on to step 4:
1 goes into 5 5 times with a remainder of 0.
The number 5 becomes the next digit in our result. 
Result so far: 2105.0
If we take 5 away from 5, we end up with 0.
Take the next digit (2) from the dividend and append it to 0, then repeat: 2 / 1

Moving on to step 5:
1 goes into 2 2 times with a remainder of 0.
Use 2 as the next digit of our solution. 
Result so far: 21052.0
If we subtract 2 from 2, we get 0.
Append the next digit (5) from the dividend to 0 and continue with: 5 / 1

Step 6:
1 can be fit into 5 5 times, resulting in a remainder of 0.
Write down 5 as next digit of the result. 
Result so far: 210525.0
Subtracting 5 from 5 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.

Moving on to step 7:
The number 1 fits into 0 0 times, leaving a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 210525.0
Deduct 0 from 0 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.

Let's proceed to step 8:
If we divide 0 by 1, we get 0 and a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 210525.0
The remainder is 0 after subtracting 0 from 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

After the division, we end up with 210525.0 and a remainder of 0.0.