We're dividing 21713134 by 393 
We want to figure out the number of times 21713134 can be divided by 393.

On to step 1:
When dividing 2 by 393, we get 0 with a remainder of 2.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 2 after subtracting 0 from 2.
Grab the next digit (1) from the dividend, add it to 2, then carry on: 21 / 393

Advancing to step 2:
When dividing 21 by 393, we get 0 with a remainder of 21.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 21, we end up with 21.
Include the next digit (7) from the dividend after 21, then repeat: 217 / 393

Let's proceed to step 3:
If we divide 217 by 393, we get 0 and a remainder of 217.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 217, we get 217.
Append the next digit (1) from the dividend to 217 and continue with: 2171 / 393

Let's proceed to step 4:
When dividing 2171 by 393, we get 5 with a remainder of 206.
Write down 5 as next digit of the result. 
Result so far: 5.0
If we subtract 1965 from 2171, we get 206.
Grab the next digit (3) from the dividend, add it to 206, then carry on: 2063 / 393

Moving on to step 5:
The number 393 fits into 2063 5 times, leaving a remainder of 98.
Record the quotient 5 as the next digit in the result. 
Result so far: 55.0
If we take 1965 away from 2063, we end up with 98.
Append the next digit (1) from the dividend to 98 and continue with: 981 / 393

Advancing to step 6:
981 divided by 393 is 2 with a remainder of 195.
Write down 2 as next digit of the result. 
Result so far: 552.0
Deduct 786 from 981 and we're left with 195.
Include the next digit (3) from the dividend after 195, then repeat: 1953 / 393

On to step 7:
If we divide 1953 by 393, we get 4 and a remainder of 381.
Write down 4 as next digit of the result. 
Result so far: 5524.0
Subtract 1572 from 1953 to get 381.
Include the next digit (4) from the dividend after 381, then repeat: 3814 / 393

Step 8:
393 can be fit into 3814 9 times, resulting in a remainder of 277.
Write down 9 as next digit of the result. 
Result so far: 55249.0
Deduct 3537 from 3814 and we're left with 277.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2770, and continue the process.

Advancing to step 9:
The number 393 fits into 2770 7 times, leaving a remainder of 19.
Write down 7 as next digit of the result. 
Result so far: 55249.7
Deduct 2751 from 2770 and we're left with 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 10:
The number 393 fits into 190 0 times, leaving a remainder of 190.
Use 0 as the next digit of our solution. 
Result so far: 55249.7
Subtract 0 from 190 to get 190.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1900, and continue the process.

Advancing to step 11:
393 can be fit into 1900 4 times, resulting in a remainder of 328.
Write down 4 as next digit of the result. 
Result so far: 55249.704
Subtracting 1572 from 1900 leaves us with 328.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3280, and continue the process.

Moving on to step 12:
393 can be fit into 3280 8 times, resulting in a remainder of 136.
Record the quotient 8 as the next digit in the result. 
Result so far: 55249.7048
If we take 3144 away from 3280, we end up with 136.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1360, and continue the process.

Going ahead to step 13:
1360 divided by 393 is 3 with a remainder of 181.
Use 3 as the next digit of our solution. 
Result so far: 55249.70483
Subtracting 1179 from 1360 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.

On to step 14:
The number 393 fits into 1810 4 times, leaving a remainder of 238.
Put 4 as the next digit of the answer. 
Result so far: 55249.704834
Deduct 1572 from 1810 and we're left with 238.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2380, and continue the process.

Let's proceed to step 15:
The number 393 fits into 2380 6 times, leaving a remainder of 22.
Record the quotient 6 as the next digit in the result. 
Result so far: 55249.7048346
Deduct 2358 from 2380 and we're left with 22.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

Moving on to step 16:
393 can be fit into 220 0 times, resulting in a remainder of 220.
Put 0 as the next digit of the answer. 
Result so far: 55249.7048346
If we subtract 0 from 220, we get 220.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2200, and continue the process.

The quotient of the division is 55249.7048346, and the remainder is 2.2e-07.