15420820 ÷ 174 
We want to figure out the number of times 15420820 can be divided by 174.

Going ahead to step 1:
174 goes into 1 0 times with a remainder of 1.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 1 to get 1.
Grab the next digit (5) from the dividend, add it to 1, then carry on: 15 / 174

Advancing to step 2:
15 divided by 174 is 0 with a remainder of 15.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 15 after subtracting 0 from 15.
Fetch the next digit (4) from the dividend, attach it to 15 and continue: 154 / 174

Advancing to step 3:
When dividing 154 by 174, we get 0 with a remainder of 154.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 154 and we're left with 154.
Bring next digit (2) of the dividend behind the 154 and repeat the process: 1542 / 174

On to step 4:
If we divide 1542 by 174, we get 8 and a remainder of 150.
The next digit of our result is 8. 
Result so far: 8.0
If we subtract 1392 from 1542, we get 150.
Grab the next digit (0) from the dividend, add it to 150, then carry on: 1500 / 174

On to step 5:
If we divide 1500 by 174, we get 8 and a remainder of 108.
The number 8 becomes the next digit in our result. 
Result so far: 88.0
If we take 1392 away from 1500, we end up with 108.
Include the next digit (8) from the dividend after 108, then repeat: 1088 / 174

Let's proceed to step 6:
If we divide 1088 by 174, we get 6 and a remainder of 44.
Use 6 as the next digit of our solution. 
Result so far: 886.0
Deduct 1044 from 1088 and we're left with 44.
Take the next digit (2) from the dividend and append it to 44, then repeat: 442 / 174

On to step 7:
If we divide 442 by 174, we get 2 and a remainder of 94.
The number 2 becomes the next digit in our result. 
Result so far: 8862.0
If we take 348 away from 442, we end up with 94.
Include the next digit (0) from the dividend after 94, then repeat: 940 / 174

Moving on to step 8:
The number 174 fits into 940 5 times, leaving a remainder of 70.
Write down 5 as next digit of the result. 
Result so far: 88625.0
If we subtract 870 from 940, we get 70.
Since there are no more digits in the dividend, we add a zero to the remainder making it 700, and continue the process.

Going ahead to step 9:
174 goes into 700 4 times with a remainder of 4.
Write down 4 as next digit of the result. 
Result so far: 88625.4
If we take 696 away from 700, we end up 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 174 fits into 40 0 times, leaving a remainder of 40.
Use 0 as the next digit of our solution. 
Result so far: 88625.4
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.

Let's proceed to step 11:
The number 174 fits into 400 2 times, leaving a remainder of 52.
Use 2 as the next digit of our solution. 
Result so far: 88625.402
If we take 348 away from 400, we end up 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.

Let's proceed to step 12:
If we divide 520 by 174, we get 2 and a remainder of 172.
The next digit of our result is 2. 
Result so far: 88625.4022
If we take 348 away from 520, we end up with 172.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1720, and continue the process.

After the division, we end up with 88625.4022 and a remainder of 0.00172.