99985438 divided by 802 
Our goal is to divide 99985438 by 802.

Step 1:
9 divided by 802 is 0 with a remainder of 9.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 9 and we're left with 9.
Bring next digit (9) of the dividend behind the 9 and repeat the process: 99 / 802

Advancing to step 2:
99 divided by 802 is 0 with a remainder of 99.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 99 to get 99.
Bring next digit (9) of the dividend behind the 99 and repeat the process: 999 / 802

On to step 3:
802 goes into 999 1 times with a remainder of 197.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
If we subtract 802 from 999, we get 197.
Append the next digit (8) from the dividend to 197 and continue with: 1978 / 802

Moving on to step 4:
When dividing 1978 by 802, we get 2 with a remainder of 374.
The number 2 becomes the next digit in our result. 
Result so far: 12.0
The remainder is 374 after subtracting 1604 from 1978.
Fetch the next digit (5) from the dividend, attach it to 374 and continue: 3745 / 802

Step 5:
When dividing 3745 by 802, we get 4 with a remainder of 537.
Write down 4 as next digit of the result. 
Result so far: 124.0
Subtracting 3208 from 3745 leaves us with 537.
Append the next digit (4) from the dividend to 537 and continue with: 5374 / 802

Step 6:
If we divide 5374 by 802, we get 6 and a remainder of 562.
Write down 6 as next digit of the result. 
Result so far: 1246.0
Subtracting 4812 from 5374 leaves us with 562.
Fetch the next digit (3) from the dividend, attach it to 562 and continue: 5623 / 802

Let's proceed to step 7:
802 goes into 5623 7 times with a remainder of 9.
Put 7 as the next digit of the answer. 
Result so far: 12467.0
If we subtract 5614 from 5623, we get 9.
Take the next digit (8) from the dividend and append it to 9, then repeat: 98 / 802

Going ahead to step 8:
If we divide 98 by 802, we get 0 and a remainder of 98.
Use 0 as the next digit of our solution. 
Result so far: 124670.0
Subtracting 0 from 98 leaves us with 98.
Since there are no more digits in the dividend, we add a zero to the remainder making it 980, and continue the process.

Going ahead to step 9:
When dividing 980 by 802, we get 1 with a remainder of 178.
The number 1 becomes the next digit in our result. 
Result so far: 124670.1
Subtract 802 from 980 to get 178.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1780, and continue the process.

Step 10:
1780 divided by 802 is 2 with a remainder of 176.
Record the quotient 2 as the next digit in the result. 
Result so far: 124670.12
Subtract 1604 from 1780 to get 176.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1760, and continue the process.

Step 11:
When dividing 1760 by 802, we get 2 with a remainder of 156.
Write down 2 as next digit of the result. 
Result so far: 124670.122
Subtract 1604 from 1760 to get 156.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1560, and continue the process.

After the division, we end up with 124670.122 and a remainder of 0.0156.