We're dividing 18355642 by 172 
Let's see how many times 172 fits into 18355642.

Advancing to step 1:
If we divide 1 by 172, we get 0 and a remainder of 1.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 1, we get 1.
Bring next digit (8) of the dividend behind the 1 and repeat the process: 18 / 172

Going ahead to step 2:
172 goes into 18 0 times with a remainder of 18.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 18, we get 18.
Fetch the next digit (3) from the dividend, attach it to 18 and continue: 183 / 172

Let's proceed to step 3:
172 goes into 183 1 times with a remainder of 11.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
Subtracting 172 from 183 leaves us with 11.
Bring next digit (5) of the dividend behind the 11 and repeat the process: 115 / 172

Step 4:
If we divide 115 by 172, we get 0 and a remainder of 115.
Write down 0 as next digit of the result. 
Result so far: 10.0
The remainder is 115 after subtracting 0 from 115.
Grab the next digit (5) from the dividend, add it to 115, then carry on: 1155 / 172

Going ahead to step 5:
172 goes into 1155 6 times with a remainder of 123.
The next digit of our result is 6. 
Result so far: 106.0
The remainder is 123 after subtracting 1032 from 1155.
Append the next digit (6) from the dividend to 123 and continue with: 1236 / 172

Moving on to step 6:
The number 172 fits into 1236 7 times, leaving a remainder of 32.
Put 7 as the next digit of the answer. 
Result so far: 1067.0
Deduct 1204 from 1236 and we're left with 32.
Bring next digit (4) of the dividend behind the 32 and repeat the process: 324 / 172

On to step 7:
172 can be fit into 324 1 times, resulting in a remainder of 152.
Record the quotient 1 as the next digit in the result. 
Result so far: 10671.0
The remainder is 152 after subtracting 172 from 324.
Bring next digit (2) of the dividend behind the 152 and repeat the process: 1522 / 172

Advancing to step 8:
If we divide 1522 by 172, we get 8 and a remainder of 146.
The next digit of our result is 8. 
Result so far: 106718.0
If we subtract 1376 from 1522, we get 146.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1460, and continue the process.

Moving on to step 9:
172 can be fit into 1460 8 times, resulting in a remainder of 84.
The next digit of our result is 8. 
Result so far: 106718.8
Deduct 1376 from 1460 and we're left with 84.
Since there are no more digits in the dividend, we add a zero to the remainder making it 840, and continue the process.

On to step 10:
When dividing 840 by 172, we get 4 with a remainder of 152.
The next digit of our result is 4. 
Result so far: 106718.84
Subtracting 688 from 840 leaves us with 152.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1520, and continue the process.

Moving on to step 11:
172 can be fit into 1520 8 times, resulting in a remainder of 144.
Record the quotient 8 as the next digit in the result. 
Result so far: 106718.848
The remainder is 144 after subtracting 1376 from 1520.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1440, and continue the process.

On to step 12:
1440 divided by 172 is 8 with a remainder of 64.
Record the quotient 8 as the next digit in the result. 
Result so far: 106718.8488
Subtracting 1376 from 1440 leaves us with 64.
Since there are no more digits in the dividend, we add a zero to the remainder making it 640, and continue the process.

After the division, we end up with 106718.8488 and a remainder of 0.00064.