We're dividing 70785481 by 21 
We want to divide 70785481 by 21.

Going ahead to step 1:
When dividing 7 by 21, we get 0 with a remainder of 7.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 7, we end up with 7.
Fetch the next digit (0) from the dividend, attach it to 7 and continue: 70 / 21

On to step 2:
21 can be fit into 70 3 times, resulting in a remainder of 7.
Use 3 as the next digit of our solution. 
Result so far: 3.0
If we take 63 away from 70, we end up with 7.
Take the next digit (7) from the dividend and append it to 7, then repeat: 77 / 21

Going ahead to step 3:
77 divided by 21 is 3 with a remainder of 14.
Write down 3 as next digit of the result. 
Result so far: 33.0
The remainder is 14 after subtracting 63 from 77.
Grab the next digit (8) from the dividend, add it to 14, then carry on: 148 / 21

Moving on to step 4:
If we divide 148 by 21, we get 7 and a remainder of 1.
Put 7 as the next digit of the answer. 
Result so far: 337.0
The remainder is 1 after subtracting 147 from 148.
Fetch the next digit (5) from the dividend, attach it to 1 and continue: 15 / 21

Moving on to step 5:
21 goes into 15 0 times with a remainder of 15.
Record the quotient 0 as the next digit in the result. 
Result so far: 3370.0
If we subtract 0 from 15, we get 15.
Fetch the next digit (4) from the dividend, attach it to 15 and continue: 154 / 21

Step 6:
21 goes into 154 7 times with a remainder of 7.
Use 7 as the next digit of our solution. 
Result so far: 33707.0
Deduct 147 from 154 and we're left with 7.
Bring next digit (8) of the dividend behind the 7 and repeat the process: 78 / 21

Going ahead to step 7:
If we divide 78 by 21, we get 3 and a remainder of 15.
Use 3 as the next digit of our solution. 
Result so far: 337073.0
The remainder is 15 after subtracting 63 from 78.
Append the next digit (1) from the dividend to 15 and continue with: 151 / 21

Let's proceed to step 8:
The number 21 fits into 151 7 times, leaving a remainder of 4.
Use 7 as the next digit of our solution. 
Result so far: 3370737.0
If we take 147 away from 151, we end up with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Moving on to step 9:
When dividing 40 by 21, we get 1 with a remainder of 19.
Write down 1 as next digit of the result. 
Result so far: 3370737.1
The remainder is 19 after subtracting 21 from 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

On to step 10:
When dividing 190 by 21, we get 9 with a remainder of 1.
Use 9 as the next digit of our solution. 
Result so far: 3370737.19
If we take 189 away from 190, we end up with 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Let's proceed to step 11:
21 can be fit into 10 0 times, resulting in a remainder of 10.
Record the quotient 0 as the next digit in the result. 
Result so far: 3370737.19
If we subtract 0 from 10, 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.

On to step 12:
100 divided by 21 is 4 with a remainder of 16.
Use 4 as the next digit of our solution. 
Result so far: 3370737.1904
If we subtract 84 from 100, we get 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

On to step 13:
When dividing 160 by 21, we get 7 with a remainder of 13.
The next digit of our result is 7. 
Result so far: 3370737.19047
Subtracting 147 from 160 leaves us with 13.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

On to step 14:
When dividing 130 by 21, we get 6 with a remainder of 4.
Use 6 as the next digit of our solution. 
Result so far: 3370737.190476
Subtracting 126 from 130 leaves us with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Step 15:
21 can be fit into 40 1 times, resulting in a remainder of 19.
Record the quotient 1 as the next digit in the result. 
Result so far: 3370737.1904761
Subtract 21 from 40 to get 19.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

Step 16:
21 goes into 190 9 times with a remainder of 1.
Write down 9 as next digit of the result. 
Result so far: 3370737.19047619
Deduct 189 from 190 and we're left with 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Our division results in 3370737.19047619 with a remaining 1e-09.