53121797 divided by 423 
We're looking to find how many times 423 goes into 53121797.

Let's proceed to step 1:
If we divide 5 by 423, we get 0 and a remainder of 5.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 5 leaves us with 5.
Fetch the next digit (3) from the dividend, attach it to 5 and continue: 53 / 423

On to step 2:
53 divided by 423 is 0 with a remainder of 53.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 53, we get 53.
Append the next digit (1) from the dividend to 53 and continue with: 531 / 423

Let's proceed to step 3:
If we divide 531 by 423, we get 1 and a remainder of 108.
Use 1 as the next digit of our solution. 
Result so far: 1.0
If we take 423 away from 531, we end up with 108.
Take the next digit (2) from the dividend and append it to 108, then repeat: 1082 / 423

Let's proceed to step 4:
The number 423 fits into 1082 2 times, leaving a remainder of 236.
The number 2 becomes the next digit in our result. 
Result so far: 12.0
If we take 846 away from 1082, we end up with 236.
Append the next digit (1) from the dividend to 236 and continue with: 2361 / 423

On to step 5:
2361 divided by 423 is 5 with a remainder of 246.
The next digit of our result is 5. 
Result so far: 125.0
Subtracting 2115 from 2361 leaves us with 246.
Fetch the next digit (7) from the dividend, attach it to 246 and continue: 2467 / 423

Let's proceed to step 6:
423 goes into 2467 5 times with a remainder of 352.
Write down 5 as next digit of the result. 
Result so far: 1255.0
The remainder is 352 after subtracting 2115 from 2467.
Append the next digit (9) from the dividend to 352 and continue with: 3529 / 423

Step 7:
If we divide 3529 by 423, we get 8 and a remainder of 145.
Record the quotient 8 as the next digit in the result. 
Result so far: 12558.0
If we subtract 3384 from 3529, we get 145.
Append the next digit (7) from the dividend to 145 and continue with: 1457 / 423

Moving on to step 8:
423 goes into 1457 3 times with a remainder of 188.
Write down 3 as next digit of the result. 
Result so far: 125583.0
Subtracting 1269 from 1457 leaves us with 188.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1880, and continue the process.

Let's proceed to step 9:
The number 423 fits into 1880 4 times, leaving a remainder of 188.
Use 4 as the next digit of our solution. 
Result so far: 125583.4
The remainder is 188 after subtracting 1692 from 1880.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1880, and continue the process.

Step 10:
1880 divided by 423 is 4 with a remainder of 188.
Record the quotient 4 as the next digit in the result. 
Result so far: 125583.44
Deduct 1692 from 1880 and we're left with 188.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1880, and continue the process.

In conclusion, the division gives 125583.44 with a balance of 0.188.