70580091 divided by 258 
We want to figure out the number of times 70580091 can be divided by 258.

Moving on to step 1:
258 goes into 7 0 times with a remainder of 7.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 7, we get 7.
Take the next digit (0) from the dividend and append it to 7, then repeat: 70 / 258

Going ahead to step 2:
When dividing 70 by 258, we get 0 with a remainder of 70.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 70 leaves us with 70.
Grab the next digit (5) from the dividend, add it to 70, then carry on: 705 / 258

Moving on to step 3:
When dividing 705 by 258, we get 2 with a remainder of 189.
Write down 2 as next digit of the result. 
Result so far: 2.0
Deduct 516 from 705 and we're left with 189.
Grab the next digit (8) from the dividend, add it to 189, then carry on: 1898 / 258

Going ahead to step 4:
If we divide 1898 by 258, we get 7 and a remainder of 92.
The number 7 becomes the next digit in our result. 
Result so far: 27.0
Subtracting 1806 from 1898 leaves us with 92.
Fetch the next digit (0) from the dividend, attach it to 92 and continue: 920 / 258

Step 5:
920 divided by 258 is 3 with a remainder of 146.
Record the quotient 3 as the next digit in the result. 
Result so far: 273.0
If we take 774 away from 920, we end up with 146.
Take the next digit (0) from the dividend and append it to 146, then repeat: 1460 / 258

Going ahead to step 6:
The number 258 fits into 1460 5 times, leaving a remainder of 170.
Write down 5 as next digit of the result. 
Result so far: 2735.0
Deduct 1290 from 1460 and we're left with 170.
Grab the next digit (9) from the dividend, add it to 170, then carry on: 1709 / 258

On to step 7:
258 goes into 1709 6 times with a remainder of 161.
The next digit of our result is 6. 
Result so far: 27356.0
If we subtract 1548 from 1709, we get 161.
Fetch the next digit (1) from the dividend, attach it to 161 and continue: 1611 / 258

Advancing to step 8:
If we divide 1611 by 258, we get 6 and a remainder of 63.
Record the quotient 6 as the next digit in the result. 
Result so far: 273566.0
Deduct 1548 from 1611 and we're left with 63.
Since there are no more digits in the dividend, we add a zero to the remainder making it 630, and continue the process.

Step 9:
The number 258 fits into 630 2 times, leaving a remainder of 114.
Write down 2 as next digit of the result. 
Result so far: 273566.2
If we subtract 516 from 630, we get 114.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1140, and continue the process.

Let's proceed to step 10:
If we divide 1140 by 258, we get 4 and a remainder of 108.
Write down 4 as next digit of the result. 
Result so far: 273566.24
Deduct 1032 from 1140 and we're left with 108.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1080, and continue the process.

Going ahead to step 11:
The number 258 fits into 1080 4 times, leaving a remainder of 48.
Put 4 as the next digit of the answer. 
Result so far: 273566.244
If we take 1032 away from 1080, we end up with 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

The quotient of the division is 273566.244, and the remainder is 0.0048.