We're dividing 2172290 by 557 
Let's see how many times 557 fits into 2172290.

On to step 1:
557 goes into 2 0 times with a remainder of 2.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 2, we get 2.
Append the next digit (1) from the dividend to 2 and continue with: 21 / 557

On to step 2:
557 goes into 21 0 times with a remainder of 21.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 21 and we're left with 21.
Append the next digit (7) from the dividend to 21 and continue with: 217 / 557

Advancing to step 3:
557 goes into 217 0 times with a remainder of 217.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 217, we get 217.
Bring next digit (2) of the dividend behind the 217 and repeat the process: 2172 / 557

Advancing to step 4:
The number 557 fits into 2172 3 times, leaving a remainder of 501.
Put 3 as the next digit of the answer. 
Result so far: 3.0
If we subtract 1671 from 2172, we get 501.
Append the next digit (2) from the dividend to 501 and continue with: 5012 / 557

Going ahead to step 5:
The number 557 fits into 5012 8 times, leaving a remainder of 556.
Record the quotient 8 as the next digit in the result. 
Result so far: 38.0
If we subtract 4456 from 5012, we get 556.
Grab the next digit (9) from the dividend, add it to 556, then carry on: 5569 / 557

Step 6:
557 goes into 5569 9 times with a remainder of 556.
The number 9 becomes the next digit in our result. 
Result so far: 389.0
If we subtract 5013 from 5569, we get 556.
Include the next digit (0) from the dividend after 556, then repeat: 5560 / 557

Going ahead to step 7:
557 goes into 5560 9 times with a remainder of 547.
Record the quotient 9 as the next digit in the result. 
Result so far: 3899.0
Deduct 5013 from 5560 and we're left with 547.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5470, and continue the process.

Advancing to step 8:
If we divide 5470 by 557, we get 9 and a remainder of 457.
The number 9 becomes the next digit in our result. 
Result so far: 3899.9
Subtract 5013 from 5470 to get 457.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4570, and continue the process.

Let's proceed to step 9:
557 can be fit into 4570 8 times, resulting in a remainder of 114.
The next digit of our result is 8. 
Result so far: 3899.98
The remainder is 114 after subtracting 4456 from 4570.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1140, and continue the process.

Let's proceed to step 10:
1140 divided by 557 is 2 with a remainder of 26.
Use 2 as the next digit of our solution. 
Result so far: 3899.982
Subtract 1114 from 1140 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.

On to step 11:
260 divided by 557 is 0 with a remainder of 260.
Record the quotient 0 as the next digit in the result. 
Result so far: 3899.982
Subtracting 0 from 260 leaves us with 260.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2600, and continue the process.

Advancing to step 12:
When dividing 2600 by 557, we get 4 with a remainder of 372.
Record the quotient 4 as the next digit in the result. 
Result so far: 3899.98204
Subtracting 2228 from 2600 leaves us with 372.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3720, and continue the process.

Advancing to step 13:
557 goes into 3720 6 times with a remainder of 378.
Put 6 as the next digit of the answer. 
Result so far: 3899.982046
Subtracting 3342 from 3720 leaves us 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.

Going ahead to step 14:
The number 557 fits into 3780 6 times, leaving a remainder of 438.
Write down 6 as next digit of the result. 
Result so far: 3899.9820466
Deduct 3342 from 3780 and we're left with 438.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4380, and continue the process.

After the division, we end up with 3899.9820466 and a remainder of 4.38e-06.