We look at the division of 645243 by 58 
We want to figure out the number of times 645243 can be divided by 58.

Going ahead to step 1:
When dividing 6 by 58, we get 0 with a remainder of 6.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 6, we get 6.
Fetch the next digit (4) from the dividend, attach it to 6 and continue: 64 / 58

Step 2:
If we divide 64 by 58, we get 1 and a remainder of 6.
Put 1 as the next digit of the answer. 
Result so far: 1.0
Subtract 58 from 64 to get 6.
Take the next digit (5) from the dividend and append it to 6, then repeat: 65 / 58

Step 3:
When dividing 65 by 58, we get 1 with a remainder of 7.
The number 1 becomes the next digit in our result. 
Result so far: 11.0
If we subtract 58 from 65, we get 7.
Grab the next digit (2) from the dividend, add it to 7, then carry on: 72 / 58

Advancing to step 4:
When dividing 72 by 58, we get 1 with a remainder of 14.
Put 1 as the next digit of the answer. 
Result so far: 111.0
If we take 58 away from 72, we end up with 14.
Take the next digit (4) from the dividend and append it to 14, then repeat: 144 / 58

Going ahead to step 5:
When dividing 144 by 58, we get 2 with a remainder of 28.
The next digit of our result is 2. 
Result so far: 1112.0
Subtract 116 from 144 to get 28.
Bring next digit (3) of the dividend behind the 28 and repeat the process: 283 / 58

Let's proceed to step 6:
58 goes into 283 4 times with a remainder of 51.
Put 4 as the next digit of the answer. 
Result so far: 11124.0
Deduct 232 from 283 and we're left with 51.
Since there are no more digits in the dividend, we add a zero to the remainder making it 510, and continue the process.

On to step 7:
The number 58 fits into 510 8 times, leaving a remainder of 46.
Write down 8 as next digit of the result. 
Result so far: 11124.8
Deduct 464 from 510 and we're left with 46.
Since there are no more digits in the dividend, we add a zero to the remainder making it 460, and continue the process.

Advancing to step 8:
When dividing 460 by 58, we get 7 with a remainder of 54.
Use 7 as the next digit of our solution. 
Result so far: 11124.87
If we subtract 406 from 460, we get 54.
Since there are no more digits in the dividend, we add a zero to the remainder making it 540, and continue the process.

Let's proceed to step 9:
The number 58 fits into 540 9 times, leaving a remainder of 18.
Put 9 as the next digit of the answer. 
Result so far: 11124.879
If we subtract 522 from 540, we get 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

Let's proceed to step 10:
The number 58 fits into 180 3 times, leaving a remainder of 6.
Record the quotient 3 as the next digit in the result. 
Result so far: 11124.8793
The remainder is 6 after subtracting 174 from 180.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

On to step 11:
If we divide 60 by 58, we get 1 and a remainder of 2.
The next digit of our result is 1. 
Result so far: 11124.87931
If we take 58 away from 60, we end up with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Let's proceed to step 12:
20 divided by 58 is 0 with a remainder of 20.
The number 0 becomes the next digit in our result. 
Result so far: 11124.87931
Subtract 0 from 20 to get 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

On to step 13:
When dividing 200 by 58, we get 3 with a remainder of 26.
Record the quotient 3 as the next digit in the result. 
Result so far: 11124.8793103
Subtract 174 from 200 to get 26.
Since there are no more digits in the dividend, we add a zero to the remainder making it 260, and continue the process.

Advancing to step 14:
260 divided by 58 is 4 with a remainder of 28.
The next digit of our result is 4. 
Result so far: 11124.87931034
If we take 232 away from 260, we end up with 28.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

The final outcome is 11124.87931034, with a leftover of 2.8e-08.