33137878 divided by 420 
We want to figure out the number of times 33137878 can be divided by 420.

Step 1:
3 divided by 420 is 0 with a remainder of 3.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 3, we get 3.
Include the next digit (3) from the dividend after 3, then repeat: 33 / 420

Advancing to step 2:
420 goes into 33 0 times with a remainder of 33.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 33, we get 33.
Bring next digit (1) of the dividend behind the 33 and repeat the process: 331 / 420

Let's proceed to step 3:
The number 420 fits into 331 0 times, leaving a remainder of 331.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 331 leaves us with 331.
Grab the next digit (3) from the dividend, add it to 331, then carry on: 3313 / 420

Advancing to step 4:
The number 420 fits into 3313 7 times, leaving a remainder of 373.
Write down 7 as next digit of the result. 
Result so far: 7.0
Subtracting 2940 from 3313 leaves us with 373.
Append the next digit (7) from the dividend to 373 and continue with: 3737 / 420

Going ahead to step 5:
420 can be fit into 3737 8 times, resulting in a remainder of 377.
Use 8 as the next digit of our solution. 
Result so far: 78.0
If we take 3360 away from 3737, we end up with 377.
Grab the next digit (8) from the dividend, add it to 377, then carry on: 3778 / 420

Step 6:
When dividing 3778 by 420, we get 8 with a remainder of 418.
The next digit of our result is 8. 
Result so far: 788.0
Deduct 3360 from 3778 and we're left with 418.
Bring next digit (7) of the dividend behind the 418 and repeat the process: 4187 / 420

Moving on to step 7:
4187 divided by 420 is 9 with a remainder of 407.
Write down 9 as next digit of the result. 
Result so far: 7889.0
Subtract 3780 from 4187 to get 407.
Grab the next digit (8) from the dividend, add it to 407, then carry on: 4078 / 420

Let's proceed to step 8:
420 can be fit into 4078 9 times, resulting in a remainder of 298.
The number 9 becomes the next digit in our result. 
Result so far: 78899.0
If we subtract 3780 from 4078, we get 298.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2980, and continue the process.

Advancing to step 9:
420 can be fit into 2980 7 times, resulting in a remainder of 40.
Use 7 as the next digit of our solution. 
Result so far: 78899.7
Subtract 2940 from 2980 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.

Step 10:
If we divide 400 by 420, we get 0 and a remainder of 400.
The number 0 becomes the next digit in our result. 
Result so far: 78899.7
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 11:
420 goes into 4000 9 times with a remainder of 220.
The next digit of our result is 9. 
Result so far: 78899.709
If we take 3780 away from 4000, we end up with 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 12:
The number 420 fits into 2200 5 times, leaving a remainder of 100.
Write down 5 as next digit of the result. 
Result so far: 78899.7095
If we subtract 2100 from 2200, we 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.

Let's proceed to step 13:
If we divide 1000 by 420, we get 2 and a remainder of 160.
The next digit of our result is 2. 
Result so far: 78899.70952
Subtracting 840 from 1000 leaves us with 160.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1600, and continue the process.

Advancing to step 14:
If we divide 1600 by 420, we get 3 and a remainder of 340.
Put 3 as the next digit of the answer. 
Result so far: 78899.709523
Subtracting 1260 from 1600 leaves us 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.

Advancing to step 15:
3400 divided by 420 is 8 with a remainder of 40.
Use 8 as the next digit of our solution. 
Result so far: 78899.7095238
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.

Step 16:
If we divide 400 by 420, we get 0 and a remainder of 400.
Use 0 as the next digit of our solution. 
Result so far: 78899.7095238
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.

In conclusion, the division gives 78899.7095238 with a balance of 4e-07.