Let's divide 643225 by 70
We're looking to find how many times 70 goes into 643225.

Going ahead to step 1:
70 can be fit into 6 0 times, resulting in a remainder of 6.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 6 to get 6.
Include the next digit (4) from the dividend after 6, then repeat: 64 / 70

Advancing to step 2:
When dividing 64 by 70, we get 0 with a remainder of 64.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 64 and we're left with 64.
Include the next digit (3) from the dividend after 64, then repeat: 643 / 70

On to step 3:
The number 70 fits into 643 9 times, leaving a remainder of 13.
Write down 9 as next digit of the result. 
Result so far: 9.0
The remainder is 13 after subtracting 630 from 643.
Grab the next digit (2) from the dividend, add it to 13, then carry on: 132 / 70

Going ahead to step 4:
70 can be fit into 132 1 times, resulting in a remainder of 62.
The number 1 becomes the next digit in our result. 
Result so far: 91.0
Deduct 70 from 132 and we're left with 62.
Fetch the next digit (2) from the dividend, attach it to 62 and continue: 622 / 70

Let's proceed to step 5:
622 divided by 70 is 8 with a remainder of 62.
Write down 8 as next digit of the result. 
Result so far: 918.0
The remainder is 62 after subtracting 560 from 622.
Bring next digit (5) of the dividend behind the 62 and repeat the process: 625 / 70

On to step 6:
625 divided by 70 is 8 with a remainder of 65.
Use 8 as the next digit of our solution. 
Result so far: 9188.0
Subtracting 560 from 625 leaves us with 65.
Since there are no more digits in the dividend, we add a zero to the remainder making it 650, and continue the process.

Let's proceed to step 7:
70 can be fit into 650 9 times, resulting in a remainder of 20.
Record the quotient 9 as the next digit in the result. 
Result so far: 9188.9
Deduct 630 from 650 and we're left 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.

Advancing to step 8:
If we divide 200 by 70, we get 2 and a remainder of 60.
Write down 2 as next digit of the result. 
Result so far: 9188.92
The remainder is 60 after subtracting 140 from 200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

Going ahead to step 9:
70 can be fit into 600 8 times, resulting in a remainder of 40.
The number 8 becomes the next digit in our result. 
Result so far: 9188.928
Deduct 560 from 600 and we're left with 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Moving on to step 10:
70 can be fit into 400 5 times, resulting in a remainder of 50.
Use 5 as the next digit of our solution. 
Result so far: 9188.9285
Deduct 350 from 400 and we're left with 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Step 11:
The number 70 fits into 500 7 times, leaving a remainder of 10.
The number 7 becomes the next digit in our result. 
Result so far: 9188.92857
If we subtract 490 from 500, we get 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Step 12:
The number 70 fits into 100 1 times, leaving a remainder of 30.
Put 1 as the next digit of the answer. 
Result so far: 9188.928571
If we subtract 70 from 100, we get 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Moving on to step 13:
70 goes into 300 4 times with a remainder of 20.
Put 4 as the next digit of the answer. 
Result so far: 9188.9285714
Subtract 280 from 300 to get 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:
If we divide 200 by 70, we get 2 and a remainder of 60.
The number 2 becomes the next digit in our result. 
Result so far: 9188.92857142
The remainder is 60 after subtracting 140 from 200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

The final outcome is 9188.92857142, with a leftover of 6e-08.