55161623 ÷ 999 
Our goal is to divide 55161623 by 999.

Step 1:
When dividing 5 by 999, we get 0 with a remainder of 5.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 5 leaves us with 5.
Take the next digit (5) from the dividend and append it to 5, then repeat: 55 / 999

On to step 2:
999 goes into 55 0 times with a remainder of 55.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 55, we get 55.
Grab the next digit (1) from the dividend, add it to 55, then carry on: 551 / 999

Going ahead to step 3:
When dividing 551 by 999, we get 0 with a remainder of 551.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 551 leaves us with 551.
Take the next digit (6) from the dividend and append it to 551, then repeat: 5516 / 999

Step 4:
5516 divided by 999 is 5 with a remainder of 521.
Use 5 as the next digit of our solution. 
Result so far: 5.0
Deduct 4995 from 5516 and we're left with 521.
Bring next digit (1) of the dividend behind the 521 and repeat the process: 5211 / 999

Let's proceed to step 5:
If we divide 5211 by 999, we get 5 and a remainder of 216.
Write down 5 as next digit of the result. 
Result so far: 55.0
If we take 4995 away from 5211, we end up with 216.
Take the next digit (6) from the dividend and append it to 216, then repeat: 2166 / 999

Going ahead to step 6:
The number 999 fits into 2166 2 times, leaving a remainder of 168.
The next digit of our result is 2. 
Result so far: 552.0
If we take 1998 away from 2166, we end up with 168.
Grab the next digit (2) from the dividend, add it to 168, then carry on: 1682 / 999

Step 7:
If we divide 1682 by 999, we get 1 and a remainder of 683.
The number 1 becomes the next digit in our result. 
Result so far: 5521.0
Subtract 999 from 1682 to get 683.
Take the next digit (3) from the dividend and append it to 683, then repeat: 6833 / 999

Let's proceed to step 8:
999 goes into 6833 6 times with a remainder of 839.
Use 6 as the next digit of our solution. 
Result so far: 55216.0
If we subtract 5994 from 6833, we get 839.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8390, and continue the process.

Moving on to step 9:
If we divide 8390 by 999, we get 8 and a remainder of 398.
The number 8 becomes the next digit in our result. 
Result so far: 55216.8
If we subtract 7992 from 8390, we get 398.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3980, and continue the process.

Let's proceed to step 10:
3980 divided by 999 is 3 with a remainder of 983.
Use 3 as the next digit of our solution. 
Result so far: 55216.83
Subtracting 2997 from 3980 leaves us with 983.
Since there are no more digits in the dividend, we add a zero to the remainder making it 9830, and continue the process.

Let's proceed to step 11:
The number 999 fits into 9830 9 times, leaving a remainder of 839.
The number 9 becomes the next digit in our result. 
Result so far: 55216.839
Subtract 8991 from 9830 to get 839.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8390, and continue the process.

On to step 12:
999 can be fit into 8390 8 times, resulting in a remainder of 398.
Put 8 as the next digit of the answer. 
Result so far: 55216.8398
If we take 7992 away from 8390, we end up with 398.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3980, and continue the process.

Let's proceed to step 13:
If we divide 3980 by 999, we get 3 and a remainder of 983.
The number 3 becomes the next digit in our result. 
Result so far: 55216.83983
If we take 2997 away from 3980, we end up with 983.
Since there are no more digits in the dividend, we add a zero to the remainder making it 9830, and continue the process.

Let's proceed to step 14:
999 goes into 9830 9 times with a remainder of 839.
Write down 9 as next digit of the result. 
Result so far: 55216.839839
If we take 8991 away from 9830, we end up with 839.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8390, and continue the process.

Moving on to step 15:
If we divide 8390 by 999, we get 8 and a remainder of 398.
The next digit of our result is 8. 
Result so far: 55216.8398398
The remainder is 398 after subtracting 7992 from 8390.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3980, and continue the process.

Let's proceed to step 16:
3980 divided by 999 is 3 with a remainder of 983.
The number 3 becomes the next digit in our result. 
Result so far: 55216.83983983
If we take 2997 away from 3980, we end up with 983.
Since there are no more digits in the dividend, we add a zero to the remainder making it 9830, and continue the process.

The quotient of the division is 55216.83983983, and the remainder is 9.83e-07.