3172941 ÷ 801 
We want to figure out the number of times 3172941 can be divided by 801.

Advancing to step 1:
If we divide 3 by 801, we get 0 and a remainder of 3.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 3 after subtracting 0 from 3.
Fetch the next digit (1) from the dividend, attach it to 3 and continue: 31 / 801

Advancing to step 2:
801 goes into 31 0 times with a remainder of 31.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 31 after subtracting 0 from 31.
Take the next digit (7) from the dividend and append it to 31, then repeat: 317 / 801

Advancing to step 3:
If we divide 317 by 801, we get 0 and a remainder of 317.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 317, we get 317.
Append the next digit (2) from the dividend to 317 and continue with: 3172 / 801

Step 4:
3172 divided by 801 is 3 with a remainder of 769.
Put 3 as the next digit of the answer. 
Result so far: 3.0
Subtract 2403 from 3172 to get 769.
Include the next digit (9) from the dividend after 769, then repeat: 7699 / 801

On to step 5:
If we divide 7699 by 801, we get 9 and a remainder of 490.
The number 9 becomes the next digit in our result. 
Result so far: 39.0
The remainder is 490 after subtracting 7209 from 7699.
Include the next digit (4) from the dividend after 490, then repeat: 4904 / 801

Step 6:
The number 801 fits into 4904 6 times, leaving a remainder of 98.
Use 6 as the next digit of our solution. 
Result so far: 396.0
If we take 4806 away from 4904, we end up with 98.
Take the next digit (1) from the dividend and append it to 98, then repeat: 981 / 801

Moving on to step 7:
981 divided by 801 is 1 with a remainder of 180.
Record the quotient 1 as the next digit in the result. 
Result so far: 3961.0
Deduct 801 from 981 and we're left with 180.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1800, and continue the process.

On to step 8:
When dividing 1800 by 801, we get 2 with a remainder of 198.
The next digit of our result is 2. 
Result so far: 3961.2
If we subtract 1602 from 1800, we get 198.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1980, and continue the process.

Advancing to step 9:
801 can be fit into 1980 2 times, resulting in a remainder of 378.
Write down 2 as next digit of the result. 
Result so far: 3961.22
If we take 1602 away from 1980, we end up with 378.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3780, and continue the process.

The final outcome is 3961.22, with a leftover of 0.378.