We look at the division of 86573937 by 402 
Our goal is to divide 86573937 by 402.

Let's proceed to step 1:
402 can be fit into 8 0 times, resulting in a remainder of 8.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 8 after subtracting 0 from 8.
Take the next digit (6) from the dividend and append it to 8, then repeat: 86 / 402

Going ahead to step 2:
402 goes into 86 0 times with a remainder of 86.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 86 leaves us with 86.
Grab the next digit (5) from the dividend, add it to 86, then carry on: 865 / 402

Step 3:
When dividing 865 by 402, we get 2 with a remainder of 61.
Record the quotient 2 as the next digit in the result. 
Result so far: 2.0
Subtract 804 from 865 to get 61.
Append the next digit (7) from the dividend to 61 and continue with: 617 / 402

On to step 4:
402 goes into 617 1 times with a remainder of 215.
The number 1 becomes the next digit in our result. 
Result so far: 21.0
The remainder is 215 after subtracting 402 from 617.
Include the next digit (3) from the dividend after 215, then repeat: 2153 / 402

Advancing to step 5:
402 goes into 2153 5 times with a remainder of 143.
Use 5 as the next digit of our solution. 
Result so far: 215.0
Subtract 2010 from 2153 to get 143.
Take the next digit (9) from the dividend and append it to 143, then repeat: 1439 / 402

On to step 6:
402 goes into 1439 3 times with a remainder of 233.
Use 3 as the next digit of our solution. 
Result so far: 2153.0
Deduct 1206 from 1439 and we're left with 233.
Include the next digit (3) from the dividend after 233, then repeat: 2333 / 402

Advancing to step 7:
402 goes into 2333 5 times with a remainder of 323.
Record the quotient 5 as the next digit in the result. 
Result so far: 21535.0
Subtract 2010 from 2333 to get 323.
Append the next digit (7) from the dividend to 323 and continue with: 3237 / 402

Step 8:
402 can be fit into 3237 8 times, resulting in a remainder of 21.
Record the quotient 8 as the next digit in the result. 
Result so far: 215358.0
Subtract 3216 from 3237 to get 21.
Since there are no more digits in the dividend, we add a zero to the remainder making it 210, and continue the process.

On to step 9:
The number 402 fits into 210 0 times, leaving a remainder of 210.
Use 0 as the next digit of our solution. 
Result so far: 215358.0
Subtract 0 from 210 to get 210.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2100, and continue the process.

Advancing to step 10:
When dividing 2100 by 402, we get 5 with a remainder of 90.
Put 5 as the next digit of the answer. 
Result so far: 215358.05
Deduct 2010 from 2100 and we're left with 90.
Since there are no more digits in the dividend, we add a zero to the remainder making it 900, and continue the process.

Going ahead to step 11:
The number 402 fits into 900 2 times, leaving a remainder of 96.
Write down 2 as next digit of the result. 
Result so far: 215358.052
If we subtract 804 from 900, we get 96.
Since there are no more digits in the dividend, we add a zero to the remainder making it 960, and continue the process.

Step 12:
402 can be fit into 960 2 times, resulting in a remainder of 156.
The number 2 becomes the next digit in our result. 
Result so far: 215358.0522
The remainder is 156 after subtracting 804 from 960.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1560, and continue the process.

In conclusion, the division gives 215358.0522 with a balance of 0.00156.