64485386 ÷ 248 
We want to figure out the number of times 64485386 can be divided by 248.

On to step 1:
The number 248 fits into 6 0 times, leaving a remainder of 6.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 6 and we're left with 6.
Append the next digit (4) from the dividend to 6 and continue with: 64 / 248

Moving on to step 2:
64 divided by 248 is 0 with a remainder of 64.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 64 to get 64.
Grab the next digit (4) from the dividend, add it to 64, then carry on: 644 / 248

Moving on to step 3:
The number 248 fits into 644 2 times, leaving a remainder of 148.
Record the quotient 2 as the next digit in the result. 
Result so far: 2.0
Deduct 496 from 644 and we're left with 148.
Bring next digit (8) of the dividend behind the 148 and repeat the process: 1488 / 248

Advancing to step 4:
248 can be fit into 1488 6 times, resulting in a remainder of 0.
The next digit of our result is 6. 
Result so far: 26.0
Deduct 1488 from 1488 and we're left with 0.
Append the next digit (5) from the dividend to 0 and continue with: 5 / 248

Going ahead to step 5:
When dividing 5 by 248, we get 0 with a remainder of 5.
Record the quotient 0 as the next digit in the result. 
Result so far: 260.0
Subtract 0 from 5 to get 5.
Bring next digit (3) of the dividend behind the 5 and repeat the process: 53 / 248

Moving on to step 6:
The number 248 fits into 53 0 times, leaving a remainder of 53.
The number 0 becomes the next digit in our result. 
Result so far: 2600.0
The remainder is 53 after subtracting 0 from 53.
Grab the next digit (8) from the dividend, add it to 53, then carry on: 538 / 248

Step 7:
248 can be fit into 538 2 times, resulting in a remainder of 42.
The number 2 becomes the next digit in our result. 
Result so far: 26002.0
Subtracting 496 from 538 leaves us with 42.
Append the next digit (6) from the dividend to 42 and continue with: 426 / 248

Step 8:
If we divide 426 by 248, we get 1 and a remainder of 178.
Use 1 as the next digit of our solution. 
Result so far: 260021.0
Subtracting 248 from 426 leaves us with 178.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1780, and continue the process.

Advancing to step 9:
The number 248 fits into 1780 7 times, leaving a remainder of 44.
The next digit of our result is 7. 
Result so far: 260021.7
Subtract 1736 from 1780 to get 44.
Since there are no more digits in the dividend, we add a zero to the remainder making it 440, and continue the process.

Step 10:
248 goes into 440 1 times with a remainder of 192.
The number 1 becomes the next digit in our result. 
Result so far: 260021.71
If we take 248 away from 440, we end up with 192.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1920, and continue the process.

On to step 11:
248 goes into 1920 7 times with a remainder of 184.
Write down 7 as next digit of the result. 
Result so far: 260021.717
Deduct 1736 from 1920 and we're left with 184.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1840, and continue the process.

Let's proceed to step 12:
If we divide 1840 by 248, we get 7 and a remainder of 104.
Record the quotient 7 as the next digit in the result. 
Result so far: 260021.7177
Subtract 1736 from 1840 to get 104.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1040, and continue the process.

After the division, we end up with 260021.7177 and a remainder of 0.00104.