We look at the division of 64601777 by 420 
We want to figure out the number of times 64601777 can be divided by 420.

Step 1:
420 goes into 6 0 times with a remainder of 6.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 6, we get 6.
Append the next digit (4) from the dividend to 6 and continue with: 64 / 420

Going ahead to step 2:
420 goes into 64 0 times with a remainder of 64.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 64 leaves us with 64.
Fetch the next digit (6) from the dividend, attach it to 64 and continue: 646 / 420

Step 3:
420 goes into 646 1 times with a remainder of 226.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
Subtract 420 from 646 to get 226.
Fetch the next digit (0) from the dividend, attach it to 226 and continue: 2260 / 420

Let's proceed to step 4:
420 can be fit into 2260 5 times, resulting in a remainder of 160.
The next digit of our result is 5. 
Result so far: 15.0
Subtract 2100 from 2260 to get 160.
Take the next digit (1) from the dividend and append it to 160, then repeat: 1601 / 420

On to step 5:
420 can be fit into 1601 3 times, resulting in a remainder of 341.
The number 3 becomes the next digit in our result. 
Result so far: 153.0
Subtract 1260 from 1601 to get 341.
Grab the next digit (7) from the dividend, add it to 341, then carry on: 3417 / 420

Moving on to step 6:
420 goes into 3417 8 times with a remainder of 57.
Write down 8 as next digit of the result. 
Result so far: 1538.0
Deduct 3360 from 3417 and we're left with 57.
Grab the next digit (7) from the dividend, add it to 57, then carry on: 577 / 420

Moving on to step 7:
577 divided by 420 is 1 with a remainder of 157.
The next digit of our result is 1. 
Result so far: 15381.0
Subtract 420 from 577 to get 157.
Grab the next digit (7) from the dividend, add it to 157, then carry on: 1577 / 420

Moving on to step 8:
420 can be fit into 1577 3 times, resulting in a remainder of 317.
Use 3 as the next digit of our solution. 
Result so far: 153813.0
Subtract 1260 from 1577 to get 317.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3170, and continue the process.

Step 9:
The number 420 fits into 3170 7 times, leaving a remainder of 230.
Use 7 as the next digit of our solution. 
Result so far: 153813.7
If we take 2940 away from 3170, we end up with 230.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2300, and continue the process.

Going ahead to step 10:
420 can be fit into 2300 5 times, resulting in a remainder of 200.
Use 5 as the next digit of our solution. 
Result so far: 153813.75
If we subtract 2100 from 2300, we get 200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2000, and continue the process.

Advancing to step 11:
The number 420 fits into 2000 4 times, leaving a remainder of 320.
Record the quotient 4 as the next digit in the result. 
Result so far: 153813.754
Subtract 1680 from 2000 to get 320.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3200, and continue the process.

Going ahead to step 12:
When dividing 3200 by 420, we get 7 with a remainder of 260.
Write down 7 as next digit of the result. 
Result so far: 153813.7547
Deduct 2940 from 3200 and we're left with 260.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2600, and continue the process.

Advancing to step 13:
The number 420 fits into 2600 6 times, leaving a remainder of 80.
Write down 6 as next digit of the result. 
Result so far: 153813.75476
Subtracting 2520 from 2600 leaves us with 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

Step 14:
The number 420 fits into 800 1 times, leaving a remainder of 380.
Put 1 as the next digit of the answer. 
Result so far: 153813.754761
Deduct 420 from 800 and we're left with 380.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3800, and continue the process.

Step 15:
The number 420 fits into 3800 9 times, leaving a remainder of 20.
Write down 9 as next digit of the result. 
Result so far: 153813.7547619
If we subtract 3780 from 3800, we get 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Moving on to step 16:
If we divide 200 by 420, we get 0 and a remainder of 200.
Use 0 as the next digit of our solution. 
Result so far: 153813.7547619
Subtracting 0 from 200 leaves us with 200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2000, and continue the process.

After the division, we end up with 153813.7547619 and a remainder of 2e-07.