Let's divide 19427835 by 643
We want to figure out the number of times 19427835 can be divided by 643.

Step 1:
The number 643 fits into 1 0 times, leaving a remainder of 1.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 1 and we're left with 1.
Grab the next digit (9) from the dividend, add it to 1, then carry on: 19 / 643

Let's proceed to step 2:
643 can be fit into 19 0 times, resulting in a remainder of 19.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 19 and we're left with 19.
Include the next digit (4) from the dividend after 19, then repeat: 194 / 643

Going ahead to step 3:
643 goes into 194 0 times with a remainder of 194.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 194 to get 194.
Bring next digit (2) of the dividend behind the 194 and repeat the process: 1942 / 643

Step 4:
1942 divided by 643 is 3 with a remainder of 13.
Record the quotient 3 as the next digit in the result. 
Result so far: 3.0
Subtract 1929 from 1942 to get 13.
Include the next digit (7) from the dividend after 13, then repeat: 137 / 643

Advancing to step 5:
The number 643 fits into 137 0 times, leaving a remainder of 137.
Put 0 as the next digit of the answer. 
Result so far: 30.0
If we take 0 away from 137, we end up with 137.
Take the next digit (8) from the dividend and append it to 137, then repeat: 1378 / 643

Let's proceed to step 6:
When dividing 1378 by 643, we get 2 with a remainder of 92.
Use 2 as the next digit of our solution. 
Result so far: 302.0
Subtract 1286 from 1378 to get 92.
Fetch the next digit (3) from the dividend, attach it to 92 and continue: 923 / 643

Advancing to step 7:
923 divided by 643 is 1 with a remainder of 280.
Use 1 as the next digit of our solution. 
Result so far: 3021.0
If we take 643 away from 923, we end up with 280.
Grab the next digit (5) from the dividend, add it to 280, then carry on: 2805 / 643

On to step 8:
643 can be fit into 2805 4 times, resulting in a remainder of 233.
Write down 4 as next digit of the result. 
Result so far: 30214.0
The remainder is 233 after subtracting 2572 from 2805.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2330, and continue the process.

Advancing to step 9:
When dividing 2330 by 643, we get 3 with a remainder of 401.
Put 3 as the next digit of the answer. 
Result so far: 30214.3
The remainder is 401 after subtracting 1929 from 2330.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4010, and continue the process.

Advancing to step 10:
643 can be fit into 4010 6 times, resulting in a remainder of 152.
The next digit of our result is 6. 
Result so far: 30214.36
If we take 3858 away from 4010, we end up with 152.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1520, and continue the process.

Let's proceed to step 11:
1520 divided by 643 is 2 with a remainder of 234.
Write down 2 as next digit of the result. 
Result so far: 30214.362
Deduct 1286 from 1520 and we're left with 234.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2340, and continue the process.

On to step 12:
643 can be fit into 2340 3 times, resulting in a remainder of 411.
The next digit of our result is 3. 
Result so far: 30214.3623
Subtract 1929 from 2340 to get 411.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4110, and continue the process.

Moving on to step 13:
4110 divided by 643 is 6 with a remainder of 252.
Write down 6 as next digit of the result. 
Result so far: 30214.36236
Deduct 3858 from 4110 and we're left with 252.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2520, and continue the process.

Moving on to step 14:
The number 643 fits into 2520 3 times, leaving a remainder of 591.
Use 3 as the next digit of our solution. 
Result so far: 30214.362363
Subtracting 1929 from 2520 leaves us with 591.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5910, and continue the process.

Step 15:
5910 divided by 643 is 9 with a remainder of 123.
The number 9 becomes the next digit in our result. 
Result so far: 30214.3623639
If we subtract 5787 from 5910, we get 123.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1230, and continue the process.

Moving on to step 16:
643 goes into 1230 1 times with a remainder of 587.
Put 1 as the next digit of the answer. 
Result so far: 30214.36236391
If we take 643 away from 1230, we end up with 587.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5870, and continue the process.

The final result is 30214.36236391 with a remainder of 5.87e-07.