621990 ÷ 70 
We want to divide 621990 by 70.

Moving on to step 1:
The number 70 fits into 6 0 times, leaving a remainder of 6.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 6 leaves us with 6.
Fetch the next digit (2) from the dividend, attach it to 6 and continue: 62 / 70

Let's proceed to step 2:
The number 70 fits into 62 0 times, leaving a remainder of 62.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 62, we end up with 62.
Fetch the next digit (1) from the dividend, attach it to 62 and continue: 621 / 70

Let's proceed to step 3:
621 divided by 70 is 8 with a remainder of 61.
Record the quotient 8 as the next digit in the result. 
Result so far: 8.0
If we subtract 560 from 621, we get 61.
Bring next digit (9) of the dividend behind the 61 and repeat the process: 619 / 70

Moving on to step 4:
70 can be fit into 619 8 times, resulting in a remainder of 59.
The next digit of our result is 8. 
Result so far: 88.0
Subtract 560 from 619 to get 59.
Take the next digit (9) from the dividend and append it to 59, then repeat: 599 / 70

Step 5:
The number 70 fits into 599 8 times, leaving a remainder of 39.
Put 8 as the next digit of the answer. 
Result so far: 888.0
If we take 560 away from 599, we end up with 39.
Grab the next digit (0) from the dividend, add it to 39, then carry on: 390 / 70

Moving on to step 6:
70 can be fit into 390 5 times, resulting in a remainder of 40.
Record the quotient 5 as the next digit in the result. 
Result so far: 8885.0
Subtracting 350 from 390 leaves us 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.

Advancing to step 7:
The number 70 fits into 400 5 times, leaving a remainder of 50.
The number 5 becomes the next digit in our result. 
Result so far: 8885.5
The remainder is 50 after subtracting 350 from 400.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Moving on to step 8:
70 can be fit into 500 7 times, resulting in a remainder of 10.
Write down 7 as next digit of the result. 
Result so far: 8885.57
Deduct 490 from 500 and we're left with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Advancing to step 9:
When dividing 100 by 70, we get 1 with a remainder of 30.
Write down 1 as next digit of the result. 
Result so far: 8885.571
Subtract 70 from 100 to 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.

Advancing to step 10:
300 divided by 70 is 4 with a remainder of 20.
The next digit of our result is 4. 
Result so far: 8885.5714
If we take 280 away from 300, we end up 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.

Step 11:
200 divided by 70 is 2 with a remainder of 60.
Use 2 as the next digit of our solution. 
Result so far: 8885.57142
Subtracting 140 from 200 leaves us with 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

Moving on to step 12:
70 goes into 600 8 times with a remainder of 40.
Put 8 as the next digit of the answer. 
Result so far: 8885.571428
Subtract 560 from 600 to get 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Advancing to step 13:
If we divide 400 by 70, we get 5 and a remainder of 50.
The number 5 becomes the next digit in our result. 
Result so far: 8885.5714285
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.

Let's proceed to step 14:
70 goes into 500 7 times with a remainder of 10.
Use 7 as the next digit of our solution. 
Result so far: 8885.57142857
Subtracting 490 from 500 leaves us with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

In conclusion, the division gives 8885.57142857 with a balance of 1e-08.