21069331 ÷ 394 
We want to divide 21069331 by 394.

Step 1:
394 can be fit into 2 0 times, resulting in a remainder of 2.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 2 after subtracting 0 from 2.
Bring next digit (1) of the dividend behind the 2 and repeat the process: 21 / 394

On to step 2:
When dividing 21 by 394, we get 0 with a remainder of 21.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 21, we end up with 21.
Bring next digit (0) of the dividend behind the 21 and repeat the process: 210 / 394

Moving on to step 3:
When dividing 210 by 394, we get 0 with a remainder of 210.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 210 after subtracting 0 from 210.
Bring next digit (6) of the dividend behind the 210 and repeat the process: 2106 / 394

Let's proceed to step 4:
394 goes into 2106 5 times with a remainder of 136.
Write down 5 as next digit of the result. 
Result so far: 5.0
If we subtract 1970 from 2106, we get 136.
Fetch the next digit (9) from the dividend, attach it to 136 and continue: 1369 / 394

Advancing to step 5:
394 goes into 1369 3 times with a remainder of 187.
Put 3 as the next digit of the answer. 
Result so far: 53.0
Deduct 1182 from 1369 and we're left with 187.
Append the next digit (3) from the dividend to 187 and continue with: 1873 / 394

Let's proceed to step 6:
When dividing 1873 by 394, we get 4 with a remainder of 297.
The next digit of our result is 4. 
Result so far: 534.0
The remainder is 297 after subtracting 1576 from 1873.
Include the next digit (3) from the dividend after 297, then repeat: 2973 / 394

Let's proceed to step 7:
394 goes into 2973 7 times with a remainder of 215.
The number 7 becomes the next digit in our result. 
Result so far: 5347.0
Subtracting 2758 from 2973 leaves us with 215.
Append the next digit (1) from the dividend to 215 and continue with: 2151 / 394

Step 8:
If we divide 2151 by 394, we get 5 and a remainder of 181.
Record the quotient 5 as the next digit in the result. 
Result so far: 53475.0
Subtracting 1970 from 2151 leaves us with 181.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1810, and continue the process.

Let's proceed to step 9:
394 can be fit into 1810 4 times, resulting in a remainder of 234.
Put 4 as the next digit of the answer. 
Result so far: 53475.4
The remainder is 234 after subtracting 1576 from 1810.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2340, and continue the process.

Advancing to step 10:
If we divide 2340 by 394, we get 5 and a remainder of 370.
Write down 5 as next digit of the result. 
Result so far: 53475.45
The remainder is 370 after subtracting 1970 from 2340.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3700, and continue the process.

Let's proceed to step 11:
394 goes into 3700 9 times with a remainder of 154.
Use 9 as the next digit of our solution. 
Result so far: 53475.459
Deduct 3546 from 3700 and we're left with 154.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1540, and continue the process.

Going ahead to step 12:
394 can be fit into 1540 3 times, resulting in a remainder of 358.
The number 3 becomes the next digit in our result. 
Result so far: 53475.4593
The remainder is 358 after subtracting 1182 from 1540.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3580, and continue the process.

On to step 13:
394 can be fit into 3580 9 times, resulting in a remainder of 34.
The next digit of our result is 9. 
Result so far: 53475.45939
The remainder is 34 after subtracting 3546 from 3580.
Since there are no more digits in the dividend, we add a zero to the remainder making it 340, and continue the process.

Advancing to step 14:
340 divided by 394 is 0 with a remainder of 340.
The next digit of our result is 0. 
Result so far: 53475.45939
Subtracting 0 from 340 leaves us with 340.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3400, and continue the process.

On to step 15:
394 can be fit into 3400 8 times, resulting in a remainder of 248.
Write down 8 as next digit of the result. 
Result so far: 53475.4593908
The remainder is 248 after subtracting 3152 from 3400.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2480, and continue the process.

Step 16:
394 goes into 2480 6 times with a remainder of 116.
Put 6 as the next digit of the answer. 
Result so far: 53475.45939086
Subtracting 2364 from 2480 leaves us with 116.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1160, and continue the process.

After the division, we end up with 53475.45939086 and a remainder of 1.16e-07.