34785945 divided by 643 
We're looking to find how many times 643 goes into 34785945.

On to step 1:
The number 643 fits into 3 0 times, leaving a remainder of 3.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 3 and we're left with 3.
Fetch the next digit (4) from the dividend, attach it to 3 and continue: 34 / 643

On to step 2:
34 divided by 643 is 0 with a remainder of 34.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 34 leaves us with 34.
Take the next digit (7) from the dividend and append it to 34, then repeat: 347 / 643

Going ahead to step 3:
643 goes into 347 0 times with a remainder of 347.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 347, we get 347.
Fetch the next digit (8) from the dividend, attach it to 347 and continue: 3478 / 643

On to step 4:
3478 divided by 643 is 5 with a remainder of 263.
The number 5 becomes the next digit in our result. 
Result so far: 5.0
The remainder is 263 after subtracting 3215 from 3478.
Append the next digit (5) from the dividend to 263 and continue with: 2635 / 643

Going ahead to step 5:
2635 divided by 643 is 4 with a remainder of 63.
Write down 4 as next digit of the result. 
Result so far: 54.0
Subtracting 2572 from 2635 leaves us with 63.
Fetch the next digit (9) from the dividend, attach it to 63 and continue: 639 / 643

Let's proceed to step 6:
643 can be fit into 639 0 times, resulting in a remainder of 639.
The next digit of our result is 0. 
Result so far: 540.0
If we subtract 0 from 639, we get 639.
Append the next digit (4) from the dividend to 639 and continue with: 6394 / 643

On to step 7:
When dividing 6394 by 643, we get 9 with a remainder of 607.
Write down 9 as next digit of the result. 
Result so far: 5409.0
Deduct 5787 from 6394 and we're left with 607.
Include the next digit (5) from the dividend after 607, then repeat: 6075 / 643

On to step 8:
6075 divided by 643 is 9 with a remainder of 288.
Write down 9 as next digit of the result. 
Result so far: 54099.0
If we take 5787 away from 6075, we end up with 288.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2880, and continue the process.

Step 9:
When dividing 2880 by 643, we get 4 with a remainder of 308.
The next digit of our result is 4. 
Result so far: 54099.4
Deduct 2572 from 2880 and we're left with 308.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3080, and continue the process.

Advancing to step 10:
The number 643 fits into 3080 4 times, leaving a remainder of 508.
The next digit of our result is 4. 
Result so far: 54099.44
If we subtract 2572 from 3080, we get 508.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5080, and continue the process.

The quotient of the division is 54099.44, and the remainder is 0.508.