We look at the division of 66506789 by 259 
Our goal is to divide 66506789 by 259.

Step 1:
259 goes into 6 0 times with a remainder of 6.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 6 to get 6.
Include the next digit (6) from the dividend after 6, then repeat: 66 / 259

Step 2:
259 can be fit into 66 0 times, resulting in a remainder of 66.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 66, we get 66.
Append the next digit (5) from the dividend to 66 and continue with: 665 / 259

Moving on to step 3:
The number 259 fits into 665 2 times, leaving a remainder of 147.
The number 2 becomes the next digit in our result. 
Result so far: 2.0
If we subtract 518 from 665, we get 147.
Grab the next digit (0) from the dividend, add it to 147, then carry on: 1470 / 259

Let's proceed to step 4:
1470 divided by 259 is 5 with a remainder of 175.
Put 5 as the next digit of the answer. 
Result so far: 25.0
Deduct 1295 from 1470 and we're left with 175.
Grab the next digit (6) from the dividend, add it to 175, then carry on: 1756 / 259

On to step 5:
The number 259 fits into 1756 6 times, leaving a remainder of 202.
Use 6 as the next digit of our solution. 
Result so far: 256.0
If we subtract 1554 from 1756, we get 202.
Fetch the next digit (7) from the dividend, attach it to 202 and continue: 2027 / 259

Advancing to step 6:
259 goes into 2027 7 times with a remainder of 214.
Put 7 as the next digit of the answer. 
Result so far: 2567.0
The remainder is 214 after subtracting 1813 from 2027.
Grab the next digit (8) from the dividend, add it to 214, then carry on: 2148 / 259

Moving on to step 7:
If we divide 2148 by 259, we get 8 and a remainder of 76.
The number 8 becomes the next digit in our result. 
Result so far: 25678.0
If we subtract 2072 from 2148, we get 76.
Append the next digit (9) from the dividend to 76 and continue with: 769 / 259

Step 8:
When dividing 769 by 259, we get 2 with a remainder of 251.
Put 2 as the next digit of the answer. 
Result so far: 256782.0
Subtracting 518 from 769 leaves us with 251.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2510, and continue the process.

Moving on to step 9:
The number 259 fits into 2510 9 times, leaving a remainder of 179.
Put 9 as the next digit of the answer. 
Result so far: 256782.9
Deduct 2331 from 2510 and we're left with 179.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1790, and continue the process.

Step 10:
The number 259 fits into 1790 6 times, leaving a remainder of 236.
Put 6 as the next digit of the answer. 
Result so far: 256782.96
If we take 1554 away from 1790, 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.

On to step 11:
The number 259 fits into 2360 9 times, leaving a remainder of 29.
The next digit of our result is 9. 
Result so far: 256782.969
Deduct 2331 from 2360 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.

Advancing to step 12:
259 can be fit into 290 1 times, resulting in a remainder of 31.
Put 1 as the next digit of the answer. 
Result so far: 256782.9691
If we subtract 259 from 290, we get 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 13:
310 divided by 259 is 1 with a remainder of 51.
Use 1 as the next digit of our solution. 
Result so far: 256782.96911
The remainder is 51 after subtracting 259 from 310.
Since there are no more digits in the dividend, we add a zero to the remainder making it 510, and continue the process.

The quotient of the division is 256782.96911, and the remainder is 5.1e-05.