We divide 70857315 by 21
Let's see how many times 21 fits into 70857315.

Let's proceed to step 1:
21 goes into 7 0 times with a remainder of 7.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 7 leaves us with 7.
Grab the next digit (0) from the dividend, add it to 7, then carry on: 70 / 21

On to step 2:
The number 21 fits into 70 3 times, leaving a remainder of 7.
The next digit of our result is 3. 
Result so far: 3.0
The remainder is 7 after subtracting 63 from 70.
Grab the next digit (8) from the dividend, add it to 7, then carry on: 78 / 21

Going ahead to step 3:
The number 21 fits into 78 3 times, leaving a remainder of 15.
Use 3 as the next digit of our solution. 
Result so far: 33.0
Subtract 63 from 78 to get 15.
Fetch the next digit (5) from the dividend, attach it to 15 and continue: 155 / 21

On to step 4:
When dividing 155 by 21, we get 7 with a remainder of 8.
Put 7 as the next digit of the answer. 
Result so far: 337.0
If we take 147 away from 155, we end up with 8.
Fetch the next digit (7) from the dividend, attach it to 8 and continue: 87 / 21

Going ahead to step 5:
When dividing 87 by 21, we get 4 with a remainder of 3.
The number 4 becomes the next digit in our result. 
Result so far: 3374.0
The remainder is 3 after subtracting 84 from 87.
Include the next digit (3) from the dividend after 3, then repeat: 33 / 21

Going ahead to step 6:
The number 21 fits into 33 1 times, leaving a remainder of 12.
Write down 1 as next digit of the result. 
Result so far: 33741.0
Deduct 21 from 33 and we're left with 12.
Take the next digit (1) from the dividend and append it to 12, then repeat: 121 / 21

On to step 7:
If we divide 121 by 21, we get 5 and a remainder of 16.
Put 5 as the next digit of the answer. 
Result so far: 337415.0
If we subtract 105 from 121, we get 16.
Append the next digit (5) from the dividend to 16 and continue with: 165 / 21

Going ahead to step 8:
21 can be fit into 165 7 times, resulting in a remainder of 18.
Record the quotient 7 as the next digit in the result. 
Result so far: 3374157.0
Subtract 147 from 165 to get 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

Advancing to step 9:
The number 21 fits into 180 8 times, leaving a remainder of 12.
Record the quotient 8 as the next digit in the result. 
Result so far: 3374157.8
Deduct 168 from 180 and we're left with 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Let's proceed to step 10:
If we divide 120 by 21, we get 5 and a remainder of 15.
The number 5 becomes the next digit in our result. 
Result so far: 3374157.85
The remainder is 15 after subtracting 105 from 120.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

On to step 11:
If we divide 150 by 21, we get 7 and a remainder of 3.
Put 7 as the next digit of the answer. 
Result so far: 3374157.857
Deduct 147 from 150 and we're left with 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Moving on to step 12:
When dividing 30 by 21, we get 1 with a remainder of 9.
Record the quotient 1 as the next digit in the result. 
Result so far: 3374157.8571
If we take 21 away from 30, we end up with 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

Let's proceed to step 13:
21 can be fit into 90 4 times, resulting in a remainder of 6.
Record the quotient 4 as the next digit in the result. 
Result so far: 3374157.85714
Subtract 84 from 90 to get 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Step 14:
21 can be fit into 60 2 times, resulting in a remainder of 18.
The number 2 becomes the next digit in our result. 
Result so far: 3374157.857142
The remainder is 18 after subtracting 42 from 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

Going ahead to step 15:
When dividing 180 by 21, we get 8 with a remainder of 12.
Record the quotient 8 as the next digit in the result. 
Result so far: 3374157.8571428
Deduct 168 from 180 and we're left with 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Step 16:
The number 21 fits into 120 5 times, leaving a remainder of 15.
The number 5 becomes the next digit in our result. 
Result so far: 3374157.85714285
Deduct 105 from 120 and we're left with 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Our division results in 3374157.85714285 with a remaining 1.5e-08.