Let's divide 738939 by 21
We want to divide 738939 by 21.

Moving on to step 1:
7 divided by 21 is 0 with a remainder of 7.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 7 after subtracting 0 from 7.
Append the next digit (3) from the dividend to 7 and continue with: 73 / 21

Going ahead to step 2:
73 divided by 21 is 3 with a remainder of 10.
Put 3 as the next digit of the answer. 
Result so far: 3.0
The remainder is 10 after subtracting 63 from 73.
Take the next digit (8) from the dividend and append it to 10, then repeat: 108 / 21

Step 3:
If we divide 108 by 21, we get 5 and a remainder of 3.
Record the quotient 5 as the next digit in the result. 
Result so far: 35.0
Subtracting 105 from 108 leaves us with 3.
Append the next digit (9) from the dividend to 3 and continue with: 39 / 21

Let's proceed to step 4:
21 goes into 39 1 times with a remainder of 18.
The number 1 becomes the next digit in our result. 
Result so far: 351.0
Subtract 21 from 39 to get 18.
Take the next digit (3) from the dividend and append it to 18, then repeat: 183 / 21

Going ahead to step 5:
If we divide 183 by 21, we get 8 and a remainder of 15.
Use 8 as the next digit of our solution. 
Result so far: 3518.0
If we take 168 away from 183, we end up with 15.
Take the next digit (9) from the dividend and append it to 15, then repeat: 159 / 21

Step 6:
If we divide 159 by 21, we get 7 and a remainder of 12.
Record the quotient 7 as the next digit in the result. 
Result so far: 35187.0
If we subtract 147 from 159, we get 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 7:
21 goes into 120 5 times with a remainder of 15.
Put 5 as the next digit of the answer. 
Result so far: 35187.5
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.

Advancing to step 8:
When dividing 150 by 21, we get 7 with a remainder of 3.
The number 7 becomes the next digit in our result. 
Result so far: 35187.57
Subtract 147 from 150 to get 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Going ahead to step 9:
The number 21 fits into 30 1 times, leaving a remainder of 9.
Put 1 as the next digit of the answer. 
Result so far: 35187.571
Deduct 21 from 30 and we're left 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.

Moving on to step 10:
The number 21 fits into 90 4 times, leaving a remainder of 6.
Use 4 as the next digit of our solution. 
Result so far: 35187.5714
Deduct 84 from 90 and we're left with 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Let's proceed to step 11:
When dividing 60 by 21, we get 2 with a remainder of 18.
The number 2 becomes the next digit in our result. 
Result so far: 35187.57142
If we take 42 away from 60, we end up with 18.
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 12:
When dividing 180 by 21, we get 8 with a remainder of 12.
Put 8 as the next digit of the answer. 
Result so far: 35187.571428
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.

Going ahead to step 13:
When dividing 120 by 21, we get 5 with a remainder of 15.
The next digit of our result is 5. 
Result so far: 35187.5714285
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.

Going ahead to step 14:
When dividing 150 by 21, we get 7 with a remainder of 3.
Use 7 as the next digit of our solution. 
Result so far: 35187.57142857
Subtracting 147 from 150 leaves us 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.

The quotient of the division is 35187.57142857, and the remainder is 3e-09.