51815144 ÷ 161 
We want to figure out the number of times 51815144 can be divided by 161.

Going ahead to step 1:
161 can be fit into 5 0 times, resulting in a remainder of 5.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 5 to get 5.
Grab the next digit (1) from the dividend, add it to 5, then carry on: 51 / 161

Moving on to step 2:
51 divided by 161 is 0 with a remainder of 51.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 51 after subtracting 0 from 51.
Grab the next digit (8) from the dividend, add it to 51, then carry on: 518 / 161

On to step 3:
161 goes into 518 3 times with a remainder of 35.
Put 3 as the next digit of the answer. 
Result so far: 3.0
If we take 483 away from 518, we end up with 35.
Append the next digit (1) from the dividend to 35 and continue with: 351 / 161

On to step 4:
When dividing 351 by 161, we get 2 with a remainder of 29.
The number 2 becomes the next digit in our result. 
Result so far: 32.0
Subtract 322 from 351 to get 29.
Include the next digit (5) from the dividend after 29, then repeat: 295 / 161

Moving on to step 5:
161 can be fit into 295 1 times, resulting in a remainder of 134.
Put 1 as the next digit of the answer. 
Result so far: 321.0
Subtract 161 from 295 to get 134.
Fetch the next digit (1) from the dividend, attach it to 134 and continue: 1341 / 161

Advancing to step 6:
When dividing 1341 by 161, we get 8 with a remainder of 53.
Put 8 as the next digit of the answer. 
Result so far: 3218.0
Subtracting 1288 from 1341 leaves us with 53.
Take the next digit (4) from the dividend and append it to 53, then repeat: 534 / 161

Let's proceed to step 7:
The number 161 fits into 534 3 times, leaving a remainder of 51.
Record the quotient 3 as the next digit in the result. 
Result so far: 32183.0
If we take 483 away from 534, we end up with 51.
Grab the next digit (4) from the dividend, add it to 51, then carry on: 514 / 161

On to step 8:
161 goes into 514 3 times with a remainder of 31.
Record the quotient 3 as the next digit in the result. 
Result so far: 321833.0
Subtracting 483 from 514 leaves us with 31.
Since there are no more digits in the dividend, we add a zero to the remainder making it 310, and continue the process.

Moving on to step 9:
161 can be fit into 310 1 times, resulting in a remainder of 149.
Write down 1 as next digit of the result. 
Result so far: 321833.1
The remainder is 149 after subtracting 161 from 310.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1490, and continue the process.

On to step 10:
161 can be fit into 1490 9 times, resulting in a remainder of 41.
Use 9 as the next digit of our solution. 
Result so far: 321833.19
The remainder is 41 after subtracting 1449 from 1490.
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 11:
When dividing 410 by 161, we get 2 with a remainder of 88.
Use 2 as the next digit of our solution. 
Result so far: 321833.192
Deduct 322 from 410 and we're left with 88.
Since there are no more digits in the dividend, we add a zero to the remainder making it 880, and continue the process.

Let's proceed to step 12:
When dividing 880 by 161, we get 5 with a remainder of 75.
The next digit of our result is 5. 
Result so far: 321833.1925
The remainder is 75 after subtracting 805 from 880.
Since there are no more digits in the dividend, we add a zero to the remainder making it 750, and continue the process.

Step 13:
161 can be fit into 750 4 times, resulting in a remainder of 106.
Record the quotient 4 as the next digit in the result. 
Result so far: 321833.19254
Deduct 644 from 750 and we're left with 106.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1060, and continue the process.

Step 14:
161 goes into 1060 6 times with a remainder of 94.
The next digit of our result is 6. 
Result so far: 321833.192546
Deduct 966 from 1060 and we're left with 94.
Since there are no more digits in the dividend, we add a zero to the remainder making it 940, and continue the process.

Going ahead to step 15:
If we divide 940 by 161, we get 5 and a remainder of 135.
The next digit of our result is 5. 
Result so far: 321833.1925465
If we take 805 away from 940, we end up with 135.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1350, and continue the process.

Going ahead to step 16:
1350 divided by 161 is 8 with a remainder of 62.
Write down 8 as next digit of the result. 
Result so far: 321833.19254658
The remainder is 62 after subtracting 1288 from 1350.
Since there are no more digits in the dividend, we add a zero to the remainder making it 620, and continue the process.

Our division results in 321833.19254658 with a remaining 6.2e-08.