78277620 divided by 420 
We want to figure out the number of times 78277620 can be divided by 420.

Let's proceed to step 1:
When dividing 7 by 420, we get 0 with a remainder of 7.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 7 to get 7.
Append the next digit (8) from the dividend to 7 and continue with: 78 / 420

On to step 2:
78 divided by 420 is 0 with a remainder of 78.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 78 to get 78.
Include the next digit (2) from the dividend after 78, then repeat: 782 / 420

Advancing to step 3:
If we divide 782 by 420, we get 1 and a remainder of 362.
Put 1 as the next digit of the answer. 
Result so far: 1.0
Subtract 420 from 782 to get 362.
Fetch the next digit (7) from the dividend, attach it to 362 and continue: 3627 / 420

Step 4:
When dividing 3627 by 420, we get 8 with a remainder of 267.
The next digit of our result is 8. 
Result so far: 18.0
Subtracting 3360 from 3627 leaves us with 267.
Take the next digit (7) from the dividend and append it to 267, then repeat: 2677 / 420

Going ahead to step 5:
420 goes into 2677 6 times with a remainder of 157.
Record the quotient 6 as the next digit in the result. 
Result so far: 186.0
Subtracting 2520 from 2677 leaves us with 157.
Include the next digit (6) from the dividend after 157, then repeat: 1576 / 420

Step 6:
The number 420 fits into 1576 3 times, leaving a remainder of 316.
The number 3 becomes the next digit in our result. 
Result so far: 1863.0
Subtract 1260 from 1576 to get 316.
Take the next digit (2) from the dividend and append it to 316, then repeat: 3162 / 420

Advancing to step 7:
420 goes into 3162 7 times with a remainder of 222.
Use 7 as the next digit of our solution. 
Result so far: 18637.0
If we take 2940 away from 3162, we end up with 222.
Include the next digit (0) from the dividend after 222, then repeat: 2220 / 420

Advancing to step 8:
The number 420 fits into 2220 5 times, leaving a remainder of 120.
The number 5 becomes the next digit in our result. 
Result so far: 186375.0
If we take 2100 away from 2220, we end up with 120.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1200, and continue the process.

Step 9:
1200 divided by 420 is 2 with a remainder of 360.
The next digit of our result is 2. 
Result so far: 186375.2
The remainder is 360 after subtracting 840 from 1200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3600, and continue the process.

Moving on to step 10:
3600 divided by 420 is 8 with a remainder of 240.
Use 8 as the next digit of our solution. 
Result so far: 186375.28
Subtracting 3360 from 3600 leaves us with 240.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2400, and continue the process.

Step 11:
If we divide 2400 by 420, we get 5 and a remainder of 300.
The next digit of our result is 5. 
Result so far: 186375.285
If we take 2100 away from 2400, we end up with 300.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3000, and continue the process.

Advancing to step 12:
The number 420 fits into 3000 7 times, leaving a remainder of 60.
The next digit of our result is 7. 
Result so far: 186375.2857
If we take 2940 away from 3000, we end up with 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

On to step 13:
600 divided by 420 is 1 with a remainder of 180.
Use 1 as the next digit of our solution. 
Result so far: 186375.28571
Subtracting 420 from 600 leaves us with 180.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1800, and continue the process.

Step 14:
The number 420 fits into 1800 4 times, leaving a remainder of 120.
Use 4 as the next digit of our solution. 
Result so far: 186375.285714
If we subtract 1680 from 1800, we get 120.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1200, and continue the process.

Going ahead to step 15:
If we divide 1200 by 420, we get 2 and a remainder of 360.
Write down 2 as next digit of the result. 
Result so far: 186375.2857142
Deduct 840 from 1200 and we're left with 360.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3600, and continue the process.

On to step 16:
420 can be fit into 3600 8 times, resulting in a remainder of 240.
Record the quotient 8 as the next digit in the result. 
Result so far: 186375.28571428
If we subtract 3360 from 3600, we get 240.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2400, and continue the process.

In conclusion, the division gives 186375.28571428 with a balance of 2.4e-07.