861007 ÷ 55 
Our goal is to divide 861007 by 55.

Step 1:
The number 55 fits into 8 0 times, leaving a remainder of 8.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 8, we get 8.
Bring next digit (6) of the dividend behind the 8 and repeat the process: 86 / 55

Step 2:
If we divide 86 by 55, we get 1 and a remainder of 31.
The next digit of our result is 1. 
Result so far: 1.0
The remainder is 31 after subtracting 55 from 86.
Grab the next digit (1) from the dividend, add it to 31, then carry on: 311 / 55

Let's proceed to step 3:
55 goes into 311 5 times with a remainder of 36.
Write down 5 as next digit of the result. 
Result so far: 15.0
Deduct 275 from 311 and we're left with 36.
Include the next digit (0) from the dividend after 36, then repeat: 360 / 55

Going ahead to step 4:
When dividing 360 by 55, we get 6 with a remainder of 30.
The number 6 becomes the next digit in our result. 
Result so far: 156.0
Subtracting 330 from 360 leaves us with 30.
Bring next digit (0) of the dividend behind the 30 and repeat the process: 300 / 55

Let's proceed to step 5:
55 goes into 300 5 times with a remainder of 25.
The number 5 becomes the next digit in our result. 
Result so far: 1565.0
If we take 275 away from 300, we end up with 25.
Append the next digit (7) from the dividend to 25 and continue with: 257 / 55

Step 6:
257 divided by 55 is 4 with a remainder of 37.
Put 4 as the next digit of the answer. 
Result so far: 15654.0
If we take 220 away from 257, we end up with 37.
Since there are no more digits in the dividend, we add a zero to the remainder making it 370, and continue the process.

On to step 7:
If we divide 370 by 55, we get 6 and a remainder of 40.
Put 6 as the next digit of the answer. 
Result so far: 15654.6
If we subtract 330 from 370, 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.

Going ahead to step 8:
55 can be fit into 400 7 times, resulting in a remainder of 15.
The number 7 becomes the next digit in our result. 
Result so far: 15654.67
Deduct 385 from 400 and we're left with 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Let's proceed to step 9:
55 can be fit into 150 2 times, resulting in a remainder of 40.
Put 2 as the next digit of the answer. 
Result so far: 15654.672
Subtract 110 from 150 to 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.

Step 10:
55 can be fit into 400 7 times, resulting in a remainder of 15.
Record the quotient 7 as the next digit in the result. 
Result so far: 15654.6727
If we take 385 away from 400, we end up with 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Moving on to step 11:
The number 55 fits into 150 2 times, leaving a remainder of 40.
The next digit of our result is 2. 
Result so far: 15654.67272
Subtracting 110 from 150 leaves us with 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Moving on to step 12:
When dividing 400 by 55, we get 7 with a remainder of 15.
Record the quotient 7 as the next digit in the result. 
Result so far: 15654.672727
Subtract 385 from 400 to get 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Going ahead to step 13:
150 divided by 55 is 2 with a remainder of 40.
Record the quotient 2 as the next digit in the result. 
Result so far: 15654.6727272
Subtract 110 from 150 to 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.

Advancing to step 14:
The number 55 fits into 400 7 times, leaving a remainder of 15.
Record the quotient 7 as the next digit in the result. 
Result so far: 15654.67272727
If we subtract 385 from 400, we get 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

The final outcome is 15654.67272727, with a leftover of 1.5e-08.