51868148 divided by 621 
We want to figure out the number of times 51868148 can be divided by 621.

Going ahead to step 1:
621 can be fit into 5 0 times, resulting in a remainder of 5.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 5, we get 5.
Append the next digit (1) from the dividend to 5 and continue with: 51 / 621

Let's proceed to step 2:
The number 621 fits into 51 0 times, leaving a remainder of 51.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 51 leaves us with 51.
Take the next digit (8) from the dividend and append it to 51, then repeat: 518 / 621

Advancing to step 3:
621 goes into 518 0 times with a remainder of 518.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 518, we end up with 518.
Take the next digit (6) from the dividend and append it to 518, then repeat: 5186 / 621

Moving on to step 4:
621 can be fit into 5186 8 times, resulting in a remainder of 218.
Use 8 as the next digit of our solution. 
Result so far: 8.0
Subtracting 4968 from 5186 leaves us with 218.
Take the next digit (8) from the dividend and append it to 218, then repeat: 2188 / 621

Let's proceed to step 5:
621 can be fit into 2188 3 times, resulting in a remainder of 325.
The next digit of our result is 3. 
Result so far: 83.0
The remainder is 325 after subtracting 1863 from 2188.
Include the next digit (1) from the dividend after 325, then repeat: 3251 / 621

On to step 6:
621 goes into 3251 5 times with a remainder of 146.
Use 5 as the next digit of our solution. 
Result so far: 835.0
The remainder is 146 after subtracting 3105 from 3251.
Grab the next digit (4) from the dividend, add it to 146, then carry on: 1464 / 621

Moving on to step 7:
If we divide 1464 by 621, we get 2 and a remainder of 222.
Put 2 as the next digit of the answer. 
Result so far: 8352.0
If we take 1242 away from 1464, we end up with 222.
Include the next digit (8) from the dividend after 222, then repeat: 2228 / 621

On to step 8:
The number 621 fits into 2228 3 times, leaving a remainder of 365.
Use 3 as the next digit of our solution. 
Result so far: 83523.0
If we subtract 1863 from 2228, we get 365.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3650, and continue the process.

Advancing to step 9:
The number 621 fits into 3650 5 times, leaving a remainder of 545.
Put 5 as the next digit of the answer. 
Result so far: 83523.5
Deduct 3105 from 3650 and we're left with 545.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5450, and continue the process.

Step 10:
If we divide 5450 by 621, we get 8 and a remainder of 482.
Use 8 as the next digit of our solution. 
Result so far: 83523.58
The remainder is 482 after subtracting 4968 from 5450.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4820, and continue the process.

On to step 11:
When dividing 4820 by 621, we get 7 with a remainder of 473.
Record the quotient 7 as the next digit in the result. 
Result so far: 83523.587
Subtract 4347 from 4820 to get 473.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4730, and continue the process.

Advancing to step 12:
621 goes into 4730 7 times with a remainder of 383.
The number 7 becomes the next digit in our result. 
Result so far: 83523.5877
If we subtract 4347 from 4730, we get 383.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3830, and continue the process.

After the division, we end up with 83523.5877 and a remainder of 0.00383.