90051871 ÷ 55 
We want to figure out the number of times 90051871 can be divided by 55.

On to step 1:
When dividing 9 by 55, we get 0 with a remainder of 9.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 9 and we're left with 9.
Include the next digit (0) from the dividend after 9, then repeat: 90 / 55

Step 2:
When dividing 90 by 55, we get 1 with a remainder of 35.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
If we take 55 away from 90, we end up with 35.
Take the next digit (0) from the dividend and append it to 35, then repeat: 350 / 55

Step 3:
350 divided by 55 is 6 with a remainder of 20.
Put 6 as the next digit of the answer. 
Result so far: 16.0
If we subtract 330 from 350, we get 20.
Fetch the next digit (5) from the dividend, attach it to 20 and continue: 205 / 55

Step 4:
55 can be fit into 205 3 times, resulting in a remainder of 40.
Write down 3 as next digit of the result. 
Result so far: 163.0
If we take 165 away from 205, we end up with 40.
Take the next digit (1) from the dividend and append it to 40, then repeat: 401 / 55

Advancing to step 5:
401 divided by 55 is 7 with a remainder of 16.
Record the quotient 7 as the next digit in the result. 
Result so far: 1637.0
Deduct 385 from 401 and we're left with 16.
Take the next digit (8) from the dividend and append it to 16, then repeat: 168 / 55

Going ahead to step 6:
When dividing 168 by 55, we get 3 with a remainder of 3.
Write down 3 as next digit of the result. 
Result so far: 16373.0
If we subtract 165 from 168, we get 3.
Fetch the next digit (7) from the dividend, attach it to 3 and continue: 37 / 55

Going ahead to step 7:
37 divided by 55 is 0 with a remainder of 37.
The number 0 becomes the next digit in our result. 
Result so far: 163730.0
If we subtract 0 from 37, we get 37.
Include the next digit (1) from the dividend after 37, then repeat: 371 / 55

Let's proceed to step 8:
The number 55 fits into 371 6 times, leaving a remainder of 41.
Put 6 as the next digit of the answer. 
Result so far: 1637306.0
If we take 330 away from 371, we end up with 41.
Since there are no more digits in the dividend, we add a zero to the remainder making it 410, and continue the process.

Moving on to step 9:
The number 55 fits into 410 7 times, leaving a remainder of 25.
Use 7 as the next digit of our solution. 
Result so far: 1637306.7
The remainder is 25 after subtracting 385 from 410.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

Step 10:
When dividing 250 by 55, we get 4 with a remainder of 30.
Record the quotient 4 as the next digit in the result. 
Result so far: 1637306.74
Deduct 220 from 250 and we're left with 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Step 11:
The number 55 fits into 300 5 times, leaving a remainder of 25.
The number 5 becomes the next digit in our result. 
Result so far: 1637306.745
The remainder is 25 after subtracting 275 from 300.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

On to step 12:
When dividing 250 by 55, we get 4 with a remainder of 30.
Record the quotient 4 as the next digit in the result. 
Result so far: 1637306.7454
If we take 220 away from 250, we end up with 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Going ahead to step 13:
When dividing 300 by 55, we get 5 with a remainder of 25.
The next digit of our result is 5. 
Result so far: 1637306.74545
Subtracting 275 from 300 leaves us with 25.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

On to step 14:
When dividing 250 by 55, we get 4 with a remainder of 30.
Put 4 as the next digit of the answer. 
Result so far: 1637306.745454
The remainder is 30 after subtracting 220 from 250.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

On to step 15:
55 goes into 300 5 times with a remainder of 25.
Use 5 as the next digit of our solution. 
Result so far: 1637306.7454545
The remainder is 25 after subtracting 275 from 300.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

Going ahead to step 16:
If we divide 250 by 55, we get 4 and a remainder of 30.
Put 4 as the next digit of the answer. 
Result so far: 1637306.74545454
Subtracting 220 from 250 leaves us with 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

In conclusion, the division gives 1637306.74545454 with a balance of 3e-08.