We're dividing 67052407 by 420 
We want to figure out the number of times 67052407 can be divided by 420.

On to step 1:
If we divide 6 by 420, we get 0 and a remainder of 6.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 6, we get 6.
Take the next digit (7) from the dividend and append it to 6, then repeat: 67 / 420

On to step 2:
The number 420 fits into 67 0 times, leaving a remainder of 67.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 67, we end up with 67.
Bring next digit (0) of the dividend behind the 67 and repeat the process: 670 / 420

Advancing to step 3:
When dividing 670 by 420, we get 1 with a remainder of 250.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
If we subtract 420 from 670, we get 250.
Take the next digit (5) from the dividend and append it to 250, then repeat: 2505 / 420

Step 4:
When dividing 2505 by 420, we get 5 with a remainder of 405.
Use 5 as the next digit of our solution. 
Result so far: 15.0
The remainder is 405 after subtracting 2100 from 2505.
Grab the next digit (2) from the dividend, add it to 405, then carry on: 4052 / 420

Moving on to step 5:
420 can be fit into 4052 9 times, resulting in a remainder of 272.
Record the quotient 9 as the next digit in the result. 
Result so far: 159.0
Subtract 3780 from 4052 to get 272.
Take the next digit (4) from the dividend and append it to 272, then repeat: 2724 / 420

On to step 6:
When dividing 2724 by 420, we get 6 with a remainder of 204.
Record the quotient 6 as the next digit in the result. 
Result so far: 1596.0
If we take 2520 away from 2724, we end up with 204.
Include the next digit (0) from the dividend after 204, then repeat: 2040 / 420

Let's proceed to step 7:
420 goes into 2040 4 times with a remainder of 360.
Put 4 as the next digit of the answer. 
Result so far: 15964.0
If we subtract 1680 from 2040, we get 360.
Take the next digit (7) from the dividend and append it to 360, then repeat: 3607 / 420

Moving on to step 8:
420 goes into 3607 8 times with a remainder of 247.
Put 8 as the next digit of the answer. 
Result so far: 159648.0
The remainder is 247 after subtracting 3360 from 3607.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2470, and continue the process.

Moving on to step 9:
420 goes into 2470 5 times with a remainder of 370.
Record the quotient 5 as the next digit in the result. 
Result so far: 159648.5
If we take 2100 away from 2470, we end up with 370.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3700, and continue the process.

On to step 10:
420 goes into 3700 8 times with a remainder of 340.
Record the quotient 8 as the next digit in the result. 
Result so far: 159648.58
Deduct 3360 from 3700 and we're left 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.

Going ahead to step 11:
When dividing 3400 by 420, we get 8 with a remainder of 40.
The number 8 becomes the next digit in our result. 
Result so far: 159648.588
Subtract 3360 from 3400 to get 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

After the division, we end up with 159648.588 and a remainder of 0.004.