We look at the division of 51816159 by 73 
We want to figure out the number of times 51816159 can be divided by 73.

Advancing to step 1:
The number 73 fits into 5 0 times, leaving a remainder of 5.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 5, we end up with 5.
Append the next digit (1) from the dividend to 5 and continue with: 51 / 73

Advancing to step 2:
73 can be fit into 51 0 times, resulting in a remainder of 51.
Use 0 as the next digit of our solution. 
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 / 73

On to step 3:
If we divide 518 by 73, we get 7 and a remainder of 7.
The next digit of our result is 7. 
Result so far: 7.0
Deduct 511 from 518 and we're left with 7.
Take the next digit (1) from the dividend and append it to 7, then repeat: 71 / 73

Moving on to step 4:
73 goes into 71 0 times with a remainder of 71.
The next digit of our result is 0. 
Result so far: 70.0
If we subtract 0 from 71, we get 71.
Grab the next digit (6) from the dividend, add it to 71, then carry on: 716 / 73

Moving on to step 5:
If we divide 716 by 73, we get 9 and a remainder of 59.
The number 9 becomes the next digit in our result. 
Result so far: 709.0
Subtract 657 from 716 to get 59.
Include the next digit (1) from the dividend after 59, then repeat: 591 / 73

Let's proceed to step 6:
591 divided by 73 is 8 with a remainder of 7.
Write down 8 as next digit of the result. 
Result so far: 7098.0
If we take 584 away from 591, we end up with 7.
Grab the next digit (5) from the dividend, add it to 7, then carry on: 75 / 73

Let's proceed to step 7:
73 goes into 75 1 times with a remainder of 2.
Record the quotient 1 as the next digit in the result. 
Result so far: 70981.0
If we subtract 73 from 75, we get 2.
Bring next digit (9) of the dividend behind the 2 and repeat the process: 29 / 73

Moving on to step 8:
73 goes into 29 0 times with a remainder of 29.
The next digit of our result is 0. 
Result so far: 709810.0
If we take 0 away from 29, we end up with 29.
Since there are no more digits in the dividend, we add a zero to the remainder making it 290, and continue the process.

Step 9:
290 divided by 73 is 3 with a remainder of 71.
Put 3 as the next digit of the answer. 
Result so far: 709810.3
Deduct 219 from 290 and we're left with 71.
Since there are no more digits in the dividend, we add a zero to the remainder making it 710, and continue the process.

Advancing to step 10:
73 goes into 710 9 times with a remainder of 53.
The next digit of our result is 9. 
Result so far: 709810.39
The remainder is 53 after subtracting 657 from 710.
Since there are no more digits in the dividend, we add a zero to the remainder making it 530, and continue the process.

On to step 11:
If we divide 530 by 73, we get 7 and a remainder of 19.
Record the quotient 7 as the next digit in the result. 
Result so far: 709810.397
Deduct 511 from 530 and we're left with 19.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

Advancing to step 12:
73 goes into 190 2 times with a remainder of 44.
The next digit of our result is 2. 
Result so far: 709810.3972
The remainder is 44 after subtracting 146 from 190.
Since there are no more digits in the dividend, we add a zero to the remainder making it 440, and continue the process.

Advancing to step 13:
If we divide 440 by 73, we get 6 and a remainder of 2.
The number 6 becomes the next digit in our result. 
Result so far: 709810.39726
The remainder is 2 after subtracting 438 from 440.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

On to step 14:
The number 73 fits into 20 0 times, leaving a remainder of 20.
Use 0 as the next digit of our solution. 
Result so far: 709810.39726
The remainder is 20 after subtracting 0 from 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Moving on to step 15:
73 goes into 200 2 times with a remainder of 54.
Record the quotient 2 as the next digit in the result. 
Result so far: 709810.3972602
Deduct 146 from 200 and we're left with 54.
Since there are no more digits in the dividend, we add a zero to the remainder making it 540, and continue the process.

Let's proceed to step 16:
540 divided by 73 is 7 with a remainder of 29.
The number 7 becomes the next digit in our result. 
Result so far: 709810.39726027
Deduct 511 from 540 and we're left with 29.
Since there are no more digits in the dividend, we add a zero to the remainder making it 290, and continue the process.

After the division, we end up with 709810.39726027 and a remainder of 2.9e-08.