79958538 divided by 90 
We're looking to find how many times 90 goes into 79958538.

On to step 1:
When dividing 7 by 90, we get 0 with a remainder of 7.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 7, we get 7.
Bring next digit (9) of the dividend behind the 7 and repeat the process: 79 / 90

Going ahead to step 2:
90 goes into 79 0 times with a remainder of 79.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 79 and we're left with 79.
Include the next digit (9) from the dividend after 79, then repeat: 799 / 90

Moving on to step 3:
When dividing 799 by 90, we get 8 with a remainder of 79.
The number 8 becomes the next digit in our result. 
Result so far: 8.0
Deduct 720 from 799 and we're left with 79.
Grab the next digit (5) from the dividend, add it to 79, then carry on: 795 / 90

On to step 4:
90 goes into 795 8 times with a remainder of 75.
Use 8 as the next digit of our solution. 
Result so far: 88.0
The remainder is 75 after subtracting 720 from 795.
Append the next digit (8) from the dividend to 75 and continue with: 758 / 90

Step 5:
90 goes into 758 8 times with a remainder of 38.
The next digit of our result is 8. 
Result so far: 888.0
Subtract 720 from 758 to get 38.
Take the next digit (5) from the dividend and append it to 38, then repeat: 385 / 90

Going ahead to step 6:
385 divided by 90 is 4 with a remainder of 25.
Write down 4 as next digit of the result. 
Result so far: 8884.0
If we take 360 away from 385, we end up with 25.
Grab the next digit (3) from the dividend, add it to 25, then carry on: 253 / 90

Moving on to step 7:
If we divide 253 by 90, we get 2 and a remainder of 73.
The number 2 becomes the next digit in our result. 
Result so far: 88842.0
Subtract 180 from 253 to get 73.
Bring next digit (8) of the dividend behind the 73 and repeat the process: 738 / 90

Let's proceed to step 8:
90 can be fit into 738 8 times, resulting in a remainder of 18.
Write down 8 as next digit of the result. 
Result so far: 888428.0
Deduct 720 from 738 and we're left with 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

Let's proceed to step 9:
When dividing 180 by 90, we get 2 with a remainder of 0.
Use 2 as the next digit of our solution. 
Result so far: 888428.2
Deduct 180 from 180 and we're left with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Advancing to step 10:
When dividing 0 by 90, we get 0 with a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 888428.2
Deduct 0 from 0 and we're left with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Let's proceed to step 11:
90 goes into 0 0 times with a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 888428.2
The remainder is 0 after subtracting 0 from 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

In conclusion, the division gives 888428.2 with a balance of 0.0.