42509468 ÷ 780 
Our goal is to divide 42509468 by 780.

Step 1:
The number 780 fits into 4 0 times, leaving a remainder of 4.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 4, we get 4.
Grab the next digit (2) from the dividend, add it to 4, then carry on: 42 / 780

Moving on to step 2:
The number 780 fits into 42 0 times, leaving a remainder of 42.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 42, we end up with 42.
Grab the next digit (5) from the dividend, add it to 42, then carry on: 425 / 780

Advancing to step 3:
The number 780 fits into 425 0 times, leaving a remainder of 425.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 425, we end up with 425.
Bring next digit (0) of the dividend behind the 425 and repeat the process: 4250 / 780

Moving on to step 4:
4250 divided by 780 is 5 with a remainder of 350.
The next digit of our result is 5. 
Result so far: 5.0
The remainder is 350 after subtracting 3900 from 4250.
Fetch the next digit (9) from the dividend, attach it to 350 and continue: 3509 / 780

Step 5:
When dividing 3509 by 780, we get 4 with a remainder of 389.
Write down 4 as next digit of the result. 
Result so far: 54.0
Subtract 3120 from 3509 to get 389.
Append the next digit (4) from the dividend to 389 and continue with: 3894 / 780

Step 6:
If we divide 3894 by 780, we get 4 and a remainder of 774.
Use 4 as the next digit of our solution. 
Result so far: 544.0
Subtracting 3120 from 3894 leaves us with 774.
Bring next digit (6) of the dividend behind the 774 and repeat the process: 7746 / 780

Let's proceed to step 7:
7746 divided by 780 is 9 with a remainder of 726.
Record the quotient 9 as the next digit in the result. 
Result so far: 5449.0
Subtracting 7020 from 7746 leaves us with 726.
Grab the next digit (8) from the dividend, add it to 726, then carry on: 7268 / 780

Going ahead to step 8:
When dividing 7268 by 780, we get 9 with a remainder of 248.
Record the quotient 9 as the next digit in the result. 
Result so far: 54499.0
If we take 7020 away from 7268, we end up with 248.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2480, and continue the process.

On to step 9:
780 can be fit into 2480 3 times, resulting in a remainder of 140.
Put 3 as the next digit of the answer. 
Result so far: 54499.3
Subtract 2340 from 2480 to get 140.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1400, and continue the process.

Let's proceed to step 10:
The number 780 fits into 1400 1 times, leaving a remainder of 620.
The number 1 becomes the next digit in our result. 
Result so far: 54499.31
Subtracting 780 from 1400 leaves us with 620.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6200, and continue the process.

Let's proceed to step 11:
6200 divided by 780 is 7 with a remainder of 740.
Write down 7 as next digit of the result. 
Result so far: 54499.317
Subtracting 5460 from 6200 leaves us with 740.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7400, and continue the process.

Advancing to step 12:
If we divide 7400 by 780, we get 9 and a remainder of 380.
Use 9 as the next digit of our solution. 
Result so far: 54499.3179
Subtract 7020 from 7400 to get 380.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3800, and continue the process.

Going ahead to step 13:
780 goes into 3800 4 times with a remainder of 680.
Use 4 as the next digit of our solution. 
Result so far: 54499.31794
Subtracting 3120 from 3800 leaves us with 680.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6800, and continue the process.

Advancing to step 14:
The number 780 fits into 6800 8 times, leaving a remainder of 560.
Record the quotient 8 as the next digit in the result. 
Result so far: 54499.317948
The remainder is 560 after subtracting 6240 from 6800.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5600, and continue the process.

Advancing to step 15:
780 goes into 5600 7 times with a remainder of 140.
Record the quotient 7 as the next digit in the result. 
Result so far: 54499.3179487
Subtract 5460 from 5600 to get 140.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1400, and continue the process.

Let's proceed to step 16:
If we divide 1400 by 780, we get 1 and a remainder of 620.
Record the quotient 1 as the next digit in the result. 
Result so far: 54499.31794871
Subtracting 780 from 1400 leaves us with 620.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6200, and continue the process.

The final result is 54499.31794871 with a remainder of 6.2e-07.