64665835 divided by 420 
Our goal is to divide 64665835 by 420.

Moving on to step 1:
The number 420 fits into 6 0 times, leaving a remainder of 6.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 6 leaves us with 6.
Take the next digit (4) from the dividend and append it to 6, then repeat: 64 / 420

Moving on to step 2:
The number 420 fits into 64 0 times, leaving a remainder of 64.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 64 and we're left with 64.
Grab the next digit (6) from the dividend, add it to 64, then carry on: 646 / 420

Going ahead to step 3:
646 divided by 420 is 1 with a remainder of 226.
The next digit of our result is 1. 
Result so far: 1.0
If we subtract 420 from 646, we get 226.
Grab the next digit (6) from the dividend, add it to 226, then carry on: 2266 / 420

Step 4:
If we divide 2266 by 420, we get 5 and a remainder of 166.
Write down 5 as next digit of the result. 
Result so far: 15.0
The remainder is 166 after subtracting 2100 from 2266.
Fetch the next digit (5) from the dividend, attach it to 166 and continue: 1665 / 420

Going ahead to step 5:
When dividing 1665 by 420, we get 3 with a remainder of 405.
Use 3 as the next digit of our solution. 
Result so far: 153.0
The remainder is 405 after subtracting 1260 from 1665.
Take the next digit (8) from the dividend and append it to 405, then repeat: 4058 / 420

Let's proceed to step 6:
If we divide 4058 by 420, we get 9 and a remainder of 278.
Write down 9 as next digit of the result. 
Result so far: 1539.0
Subtracting 3780 from 4058 leaves us with 278.
Grab the next digit (3) from the dividend, add it to 278, then carry on: 2783 / 420

Advancing to step 7:
If we divide 2783 by 420, we get 6 and a remainder of 263.
Use 6 as the next digit of our solution. 
Result so far: 15396.0
The remainder is 263 after subtracting 2520 from 2783.
Fetch the next digit (5) from the dividend, attach it to 263 and continue: 2635 / 420

Going ahead to step 8:
If we divide 2635 by 420, we get 6 and a remainder of 115.
Write down 6 as next digit of the result. 
Result so far: 153966.0
If we subtract 2520 from 2635, we get 115.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1150, and continue the process.

Advancing to step 9:
If we divide 1150 by 420, we get 2 and a remainder of 310.
Use 2 as the next digit of our solution. 
Result so far: 153966.2
If we subtract 840 from 1150, we get 310.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3100, and continue the process.

On to step 10:
420 goes into 3100 7 times with a remainder of 160.
Record the quotient 7 as the next digit in the result. 
Result so far: 153966.27
Subtract 2940 from 3100 to get 160.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1600, and continue the process.

Step 11:
420 can be fit into 1600 3 times, resulting in a remainder of 340.
Put 3 as the next digit of the answer. 
Result so far: 153966.273
If we take 1260 away from 1600, we end up with 340.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3400, and continue the process.

Moving on to step 12:
420 can be fit into 3400 8 times, resulting in a remainder of 40.
Write down 8 as next digit of the result. 
Result so far: 153966.2738
The remainder is 40 after subtracting 3360 from 3400.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Moving on to step 13:
When dividing 400 by 420, we get 0 with a remainder of 400.
Write down 0 as next digit of the result. 
Result so far: 153966.2738
Deduct 0 from 400 and we're left with 400.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4000, and continue the process.

On to step 14:
If we divide 4000 by 420, we get 9 and a remainder of 220.
Write down 9 as next digit of the result. 
Result so far: 153966.273809
If we subtract 3780 from 4000, we get 220.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2200, and continue the process.

Step 15:
2200 divided by 420 is 5 with a remainder of 100.
The next digit of our result is 5. 
Result so far: 153966.2738095
Subtract 2100 from 2200 to get 100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1000, and continue the process.

Advancing to step 16:
When dividing 1000 by 420, we get 2 with a remainder of 160.
The next digit of our result is 2. 
Result so far: 153966.27380952
If we subtract 840 from 1000, we get 160.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1600, and continue the process.

In conclusion, the division gives 153966.27380952 with a balance of 1.6e-07.