Let's divide 863409 by 58
We're looking to find how many times 58 goes into 863409.

Step 1:
58 goes into 8 0 times with a remainder of 8.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 8, we get 8.
Bring next digit (6) of the dividend behind the 8 and repeat the process: 86 / 58

Step 2:
The number 58 fits into 86 1 times, leaving a remainder of 28.
Write down 1 as next digit of the result. 
Result so far: 1.0
Subtracting 58 from 86 leaves us with 28.
Fetch the next digit (3) from the dividend, attach it to 28 and continue: 283 / 58

On to step 3:
If we divide 283 by 58, we get 4 and a remainder of 51.
The next digit of our result is 4. 
Result so far: 14.0
The remainder is 51 after subtracting 232 from 283.
Grab the next digit (4) from the dividend, add it to 51, then carry on: 514 / 58

Step 4:
If we divide 514 by 58, we get 8 and a remainder of 50.
The next digit of our result is 8. 
Result so far: 148.0
Deduct 464 from 514 and we're left with 50.
Bring next digit (0) of the dividend behind the 50 and repeat the process: 500 / 58

Advancing to step 5:
The number 58 fits into 500 8 times, leaving a remainder of 36.
Put 8 as the next digit of the answer. 
Result so far: 1488.0
Deduct 464 from 500 and we're left with 36.
Include the next digit (9) from the dividend after 36, then repeat: 369 / 58

Advancing to step 6:
The number 58 fits into 369 6 times, leaving a remainder of 21.
Record the quotient 6 as the next digit in the result. 
Result so far: 14886.0
Deduct 348 from 369 and we're left with 21.
Since there are no more digits in the dividend, we add a zero to the remainder making it 210, and continue the process.

Let's proceed to step 7:
If we divide 210 by 58, we get 3 and a remainder of 36.
Use 3 as the next digit of our solution. 
Result so far: 14886.3
Deduct 174 from 210 and we're left with 36.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

On to step 8:
When dividing 360 by 58, we get 6 with a remainder of 12.
Record the quotient 6 as the next digit in the result. 
Result so far: 14886.36
The remainder is 12 after subtracting 348 from 360.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

On to step 9:
If we divide 120 by 58, we get 2 and a remainder of 4.
Put 2 as the next digit of the answer. 
Result so far: 14886.362
If we subtract 116 from 120, 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.

Let's proceed to step 10:
58 goes into 40 0 times with a remainder of 40.
Write down 0 as next digit of the result. 
Result so far: 14886.362
If we subtract 0 from 40, we get 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Moving on to step 11:
When dividing 400 by 58, we get 6 with a remainder of 52.
The next digit of our result is 6. 
Result so far: 14886.36206
Subtracting 348 from 400 leaves us with 52.
Since there are no more digits in the dividend, we add a zero to the remainder making it 520, and continue the process.

On to step 12:
The number 58 fits into 520 8 times, leaving a remainder of 56.
Put 8 as the next digit of the answer. 
Result so far: 14886.362068
The remainder is 56 after subtracting 464 from 520.
Since there are no more digits in the dividend, we add a zero to the remainder making it 560, and continue the process.

Advancing to step 13:
The number 58 fits into 560 9 times, leaving a remainder of 38.
The number 9 becomes the next digit in our result. 
Result so far: 14886.3620689
The remainder is 38 after subtracting 522 from 560.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

Moving on to step 14:
If we divide 380 by 58, we get 6 and a remainder of 32.
The number 6 becomes the next digit in our result. 
Result so far: 14886.36206896
Deduct 348 from 380 and we're left with 32.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

After the division, we end up with 14886.36206896 and a remainder of 3.2e-08.