We look at the division of 643286 by 87 
We want to figure out the number of times 643286 can be divided by 87.

Moving on to step 1:
When dividing 6 by 87, we get 0 with a remainder of 6.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 6, we get 6.
Grab the next digit (4) from the dividend, add it to 6, then carry on: 64 / 87

Going ahead to step 2:
The number 87 fits into 64 0 times, leaving a remainder of 64.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 64 to get 64.
Append the next digit (3) from the dividend to 64 and continue with: 643 / 87

Let's proceed to step 3:
643 divided by 87 is 7 with a remainder of 34.
The next digit of our result is 7. 
Result so far: 7.0
If we take 609 away from 643, we end up with 34.
Fetch the next digit (2) from the dividend, attach it to 34 and continue: 342 / 87

On to step 4:
If we divide 342 by 87, we get 3 and a remainder of 81.
Record the quotient 3 as the next digit in the result. 
Result so far: 73.0
If we take 261 away from 342, we end up with 81.
Append the next digit (8) from the dividend to 81 and continue with: 818 / 87

Moving on to step 5:
87 can be fit into 818 9 times, resulting in a remainder of 35.
Record the quotient 9 as the next digit in the result. 
Result so far: 739.0
If we subtract 783 from 818, we get 35.
Append the next digit (6) from the dividend to 35 and continue with: 356 / 87

Moving on to step 6:
87 goes into 356 4 times with a remainder of 8.
Record the quotient 4 as the next digit in the result. 
Result so far: 7394.0
Deduct 348 from 356 and we're left with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Moving on to step 7:
80 divided by 87 is 0 with a remainder of 80.
Put 0 as the next digit of the answer. 
Result so far: 7394.0
Deduct 0 from 80 and we're left with 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

On to step 8:
800 divided by 87 is 9 with a remainder of 17.
Put 9 as the next digit of the answer. 
Result so far: 7394.09
Subtract 783 from 800 to get 17.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

Let's proceed to step 9:
The number 87 fits into 170 1 times, leaving a remainder of 83.
Record the quotient 1 as the next digit in the result. 
Result so far: 7394.091
Subtracting 87 from 170 leaves us with 83.
Since there are no more digits in the dividend, we add a zero to the remainder making it 830, and continue the process.

Let's proceed to step 10:
87 can be fit into 830 9 times, resulting in a remainder of 47.
Write down 9 as next digit of the result. 
Result so far: 7394.0919
The remainder is 47 after subtracting 783 from 830.
Since there are no more digits in the dividend, we add a zero to the remainder making it 470, and continue the process.

Advancing to step 11:
87 goes into 470 5 times with a remainder of 35.
Use 5 as the next digit of our solution. 
Result so far: 7394.09195
If we subtract 435 from 470, we get 35.
Since there are no more digits in the dividend, we add a zero to the remainder making it 350, and continue the process.

Advancing to step 12:
350 divided by 87 is 4 with a remainder of 2.
Use 4 as the next digit of our solution. 
Result so far: 7394.091954
Subtracting 348 from 350 leaves us with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Step 13:
If we divide 20 by 87, we get 0 and a remainder of 20.
Put 0 as the next digit of the answer. 
Result so far: 7394.091954
Subtracting 0 from 20 leaves us with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Moving on to step 14:
The number 87 fits into 200 2 times, leaving a remainder of 26.
Use 2 as the next digit of our solution. 
Result so far: 7394.09195402
If we subtract 174 from 200, we get 26.
Since there are no more digits in the dividend, we add a zero to the remainder making it 260, and continue the process.

The quotient of the division is 7394.09195402, and the remainder is 2.6e-08.