We're dividing 66870146 by 553 
We want to divide 66870146 by 553.

Moving on to step 1:
When dividing 6 by 553, we get 0 with a remainder of 6.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 6, we end up with 6.
Include the next digit (6) from the dividend after 6, then repeat: 66 / 553

Advancing to step 2:
66 divided by 553 is 0 with a remainder of 66.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 66 to get 66.
Append the next digit (8) from the dividend to 66 and continue with: 668 / 553

Going ahead to step 3:
668 divided by 553 is 1 with a remainder of 115.
Use 1 as the next digit of our solution. 
Result so far: 1.0
Subtracting 553 from 668 leaves us with 115.
Take the next digit (7) from the dividend and append it to 115, then repeat: 1157 / 553

Step 4:
1157 divided by 553 is 2 with a remainder of 51.
Record the quotient 2 as the next digit in the result. 
Result so far: 12.0
If we take 1106 away from 1157, we end up with 51.
Include the next digit (0) from the dividend after 51, then repeat: 510 / 553

On to step 5:
553 goes into 510 0 times with a remainder of 510.
Use 0 as the next digit of our solution. 
Result so far: 120.0
Subtract 0 from 510 to get 510.
Grab the next digit (1) from the dividend, add it to 510, then carry on: 5101 / 553

Moving on to step 6:
553 goes into 5101 9 times with a remainder of 124.
Record the quotient 9 as the next digit in the result. 
Result so far: 1209.0
If we take 4977 away from 5101, we end up with 124.
Bring next digit (4) of the dividend behind the 124 and repeat the process: 1244 / 553

Let's proceed to step 7:
If we divide 1244 by 553, we get 2 and a remainder of 138.
Use 2 as the next digit of our solution. 
Result so far: 12092.0
Subtract 1106 from 1244 to get 138.
Fetch the next digit (6) from the dividend, attach it to 138 and continue: 1386 / 553

Advancing to step 8:
553 can be fit into 1386 2 times, resulting in a remainder of 280.
The number 2 becomes the next digit in our result. 
Result so far: 120922.0
Subtracting 1106 from 1386 leaves us with 280.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2800, and continue the process.

Let's proceed to step 9:
If we divide 2800 by 553, we get 5 and a remainder of 35.
Put 5 as the next digit of the answer. 
Result so far: 120922.5
Deduct 2765 from 2800 and we're left with 35.
Since there are no more digits in the dividend, we add a zero to the remainder making it 350, and continue the process.

Going ahead to step 10:
553 can be fit into 350 0 times, resulting in a remainder of 350.
Use 0 as the next digit of our solution. 
Result so far: 120922.5
If we take 0 away from 350, we end up with 350.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3500, and continue the process.

Moving on to step 11:
When dividing 3500 by 553, we get 6 with a remainder of 182.
The number 6 becomes the next digit in our result. 
Result so far: 120922.506
Subtracting 3318 from 3500 leaves us with 182.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1820, and continue the process.

Let's proceed to step 12:
If we divide 1820 by 553, we get 3 and a remainder of 161.
Record the quotient 3 as the next digit in the result. 
Result so far: 120922.5063
If we take 1659 away from 1820, we end up with 161.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1610, and continue the process.

Advancing to step 13:
553 can be fit into 1610 2 times, resulting in a remainder of 504.
Write down 2 as next digit of the result. 
Result so far: 120922.50632
Subtract 1106 from 1610 to get 504.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5040, and continue the process.

Let's proceed to step 14:
The number 553 fits into 5040 9 times, leaving a remainder of 63.
Put 9 as the next digit of the answer. 
Result so far: 120922.506329
Deduct 4977 from 5040 and we're left with 63.
Since there are no more digits in the dividend, we add a zero to the remainder making it 630, and continue the process.

Advancing to step 15:
The number 553 fits into 630 1 times, leaving a remainder of 77.
Use 1 as the next digit of our solution. 
Result so far: 120922.5063291
Subtracting 553 from 630 leaves us with 77.
Since there are no more digits in the dividend, we add a zero to the remainder making it 770, and continue the process.

Moving on to step 16:
553 can be fit into 770 1 times, resulting in a remainder of 217.
Write down 1 as next digit of the result. 
Result so far: 120922.50632911
The remainder is 217 after subtracting 553 from 770.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2170, and continue the process.

After the division, we end up with 120922.50632911 and a remainder of 2.17e-07.