86109231 ÷ 973 
Let's see how many times 973 fits into 86109231.

Step 1:
973 can be fit into 8 0 times, resulting in a remainder of 8.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 8, we get 8.
Append the next digit (6) from the dividend to 8 and continue with: 86 / 973

Let's proceed to step 2:
973 goes into 86 0 times with a remainder of 86.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 86 after subtracting 0 from 86.
Append the next digit (1) from the dividend to 86 and continue with: 861 / 973

Advancing to step 3:
The number 973 fits into 861 0 times, leaving a remainder of 861.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 861 after subtracting 0 from 861.
Include the next digit (0) from the dividend after 861, then repeat: 8610 / 973

On to step 4:
The number 973 fits into 8610 8 times, leaving a remainder of 826.
Record the quotient 8 as the next digit in the result. 
Result so far: 8.0
Subtracting 7784 from 8610 leaves us with 826.
Bring next digit (9) of the dividend behind the 826 and repeat the process: 8269 / 973

Let's proceed to step 5:
If we divide 8269 by 973, we get 8 and a remainder of 485.
Put 8 as the next digit of the answer. 
Result so far: 88.0
If we take 7784 away from 8269, we end up with 485.
Take the next digit (2) from the dividend and append it to 485, then repeat: 4852 / 973

Let's proceed to step 6:
973 can be fit into 4852 4 times, resulting in a remainder of 960.
The next digit of our result is 4. 
Result so far: 884.0
If we take 3892 away from 4852, we end up with 960.
Bring next digit (3) of the dividend behind the 960 and repeat the process: 9603 / 973

Step 7:
If we divide 9603 by 973, we get 9 and a remainder of 846.
Use 9 as the next digit of our solution. 
Result so far: 8849.0
Subtract 8757 from 9603 to get 846.
Include the next digit (1) from the dividend after 846, then repeat: 8461 / 973

Advancing to step 8:
973 goes into 8461 8 times with a remainder of 677.
Use 8 as the next digit of our solution. 
Result so far: 88498.0
Deduct 7784 from 8461 and we're left with 677.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6770, and continue the process.

Let's proceed to step 9:
973 can be fit into 6770 6 times, resulting in a remainder of 932.
The number 6 becomes the next digit in our result. 
Result so far: 88498.6
The remainder is 932 after subtracting 5838 from 6770.
Since there are no more digits in the dividend, we add a zero to the remainder making it 9320, and continue the process.

Advancing to step 10:
When dividing 9320 by 973, we get 9 with a remainder of 563.
Record the quotient 9 as the next digit in the result. 
Result so far: 88498.69
Deduct 8757 from 9320 and we're left with 563.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5630, and continue the process.

Moving on to step 11:
973 goes into 5630 5 times with a remainder of 765.
The number 5 becomes the next digit in our result. 
Result so far: 88498.695
The remainder is 765 after subtracting 4865 from 5630.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7650, and continue the process.

Let's proceed to step 12:
If we divide 7650 by 973, we get 7 and a remainder of 839.
Put 7 as the next digit of the answer. 
Result so far: 88498.6957
Subtracting 6811 from 7650 leaves us with 839.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8390, and continue the process.

Advancing to step 13:
When dividing 8390 by 973, we get 8 with a remainder of 606.
The next digit of our result is 8. 
Result so far: 88498.69578
Subtracting 7784 from 8390 leaves us with 606.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6060, and continue the process.

On to step 14:
The number 973 fits into 6060 6 times, leaving a remainder of 222.
Record the quotient 6 as the next digit in the result. 
Result so far: 88498.695786
If we take 5838 away from 6060, we end up with 222.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2220, and continue the process.

Let's proceed to step 15:
2220 divided by 973 is 2 with a remainder of 274.
Use 2 as the next digit of our solution. 
Result so far: 88498.6957862
The remainder is 274 after subtracting 1946 from 2220.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2740, and continue the process.

Let's proceed to step 16:
973 goes into 2740 2 times with a remainder of 794.
Use 2 as the next digit of our solution. 
Result so far: 88498.69578622
If we take 1946 away from 2740, we end up with 794.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7940, and continue the process.

The final result is 88498.69578622 with a remainder of 7.94e-07.