We look at the division of 51029468 by 258 
We want to figure out the number of times 51029468 can be divided by 258.

Let's proceed to step 1:
258 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
Subtracting 0 from 5 leaves us with 5.
Take the next digit (1) from the dividend and append it to 5, then repeat: 51 / 258

Step 2:
258 goes into 51 0 times with a remainder of 51.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 51, we end up with 51.
Append the next digit (0) from the dividend to 51 and continue with: 510 / 258

On to step 3:
510 divided by 258 is 1 with a remainder of 252.
Use 1 as the next digit of our solution. 
Result so far: 1.0
Deduct 258 from 510 and we're left with 252.
Fetch the next digit (2) from the dividend, attach it to 252 and continue: 2522 / 258

On to step 4:
When dividing 2522 by 258, we get 9 with a remainder of 200.
Write down 9 as next digit of the result. 
Result so far: 19.0
Subtracting 2322 from 2522 leaves us with 200.
Include the next digit (9) from the dividend after 200, then repeat: 2009 / 258

Moving on to step 5:
2009 divided by 258 is 7 with a remainder of 203.
The number 7 becomes the next digit in our result. 
Result so far: 197.0
Subtracting 1806 from 2009 leaves us with 203.
Fetch the next digit (4) from the dividend, attach it to 203 and continue: 2034 / 258

Let's proceed to step 6:
When dividing 2034 by 258, we get 7 with a remainder of 228.
Record the quotient 7 as the next digit in the result. 
Result so far: 1977.0
Subtracting 1806 from 2034 leaves us with 228.
Include the next digit (6) from the dividend after 228, then repeat: 2286 / 258

Let's proceed to step 7:
When dividing 2286 by 258, we get 8 with a remainder of 222.
Write down 8 as next digit of the result. 
Result so far: 19778.0
If we subtract 2064 from 2286, we get 222.
Grab the next digit (8) from the dividend, add it to 222, then carry on: 2228 / 258

Step 8:
258 can be fit into 2228 8 times, resulting in a remainder of 164.
The number 8 becomes the next digit in our result. 
Result so far: 197788.0
Subtracting 2064 from 2228 leaves us with 164.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1640, and continue the process.

Let's proceed to step 9:
258 goes into 1640 6 times with a remainder of 92.
Record the quotient 6 as the next digit in the result. 
Result so far: 197788.6
If we take 1548 away from 1640, we end up with 92.
Since there are no more digits in the dividend, we add a zero to the remainder making it 920, and continue the process.

Going ahead to step 10:
If we divide 920 by 258, we get 3 and a remainder of 146.
The next digit of our result is 3. 
Result so far: 197788.63
Deduct 774 from 920 and we're left with 146.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1460, and continue the process.

Advancing to step 11:
1460 divided by 258 is 5 with a remainder of 170.
Record the quotient 5 as the next digit in the result. 
Result so far: 197788.635
Subtract 1290 from 1460 to get 170.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1700, and continue the process.

Advancing to step 12:
258 can be fit into 1700 6 times, resulting in a remainder of 152.
The next digit of our result is 6. 
Result so far: 197788.6356
The remainder is 152 after subtracting 1548 from 1700.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1520, and continue the process.

Moving on to step 13:
258 can be fit into 1520 5 times, resulting in a remainder of 230.
Put 5 as the next digit of the answer. 
Result so far: 197788.63565
Deduct 1290 from 1520 and we're left with 230.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2300, and continue the process.

Advancing to step 14:
258 can be fit into 2300 8 times, resulting in a remainder of 236.
Put 8 as the next digit of the answer. 
Result so far: 197788.635658
If we take 2064 away from 2300, we end up with 236.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2360, and continue the process.

Advancing to step 15:
258 can be fit into 2360 9 times, resulting in a remainder of 38.
Record the quotient 9 as the next digit in the result. 
Result so far: 197788.6356589
Subtract 2322 from 2360 to get 38.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

Going ahead to step 16:
258 goes into 380 1 times with a remainder of 122.
The next digit of our result is 1. 
Result so far: 197788.63565891
Deduct 258 from 380 and we're left with 122.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1220, and continue the process.

The final result is 197788.63565891 with a remainder of 1.22e-07.