253645 ÷ 12 
Our goal is to divide 253645 by 12.

Moving on to step 1:
12 can be fit into 2 0 times, resulting in a remainder of 2.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 2 and we're left with 2.
Fetch the next digit (5) from the dividend, attach it to 2 and continue: 25 / 12

Going ahead to step 2:
When dividing 25 by 12, we get 2 with a remainder of 1.
Use 2 as the next digit of our solution. 
Result so far: 2.0
Subtract 24 from 25 to get 1.
Append the next digit (3) from the dividend to 1 and continue with: 13 / 12

Going ahead to step 3:
13 divided by 12 is 1 with a remainder of 1.
Put 1 as the next digit of the answer. 
Result so far: 21.0
Deduct 12 from 13 and we're left with 1.
Take the next digit (6) from the dividend and append it to 1, then repeat: 16 / 12

Step 4:
12 goes into 16 1 times with a remainder of 4.
Put 1 as the next digit of the answer. 
Result so far: 211.0
Subtract 12 from 16 to get 4.
Take the next digit (4) from the dividend and append it to 4, then repeat: 44 / 12

Moving on to step 5:
The number 12 fits into 44 3 times, leaving a remainder of 8.
Write down 3 as next digit of the result. 
Result so far: 2113.0
Deduct 36 from 44 and we're left with 8.
Take the next digit (5) from the dividend and append it to 8, then repeat: 85 / 12

Step 6:
12 can be fit into 85 7 times, resulting in a remainder of 1.
Write down 7 as next digit of the result. 
Result so far: 21137.0
Deduct 84 from 85 and we're left with 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Moving on to step 7:
12 can be fit into 10 0 times, resulting in a remainder of 10.
Record the quotient 0 as the next digit in the result. 
Result so far: 21137.0
If we take 0 away from 10, we end up with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Advancing to step 8:
When dividing 100 by 12, we get 8 with a remainder of 4.
The number 8 becomes the next digit in our result. 
Result so far: 21137.08
Subtracting 96 from 100 leaves us with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Moving on to step 9:
12 goes into 40 3 times with a remainder of 4.
Write down 3 as next digit of the result. 
Result so far: 21137.083
Deduct 36 from 40 and we're left with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Step 10:
The number 12 fits into 40 3 times, leaving a remainder of 4.
Record the quotient 3 as the next digit in the result. 
Result so far: 21137.0833
If we subtract 36 from 40, we get 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

After the division, we end up with 21137.0833 and a remainder of 4e-05.