Let's divide 73511286 by 420
We're looking to find how many times 420 goes into 73511286.

Step 1:
7 divided by 420 is 0 with a remainder of 7.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 7 after subtracting 0 from 7.
Grab the next digit (3) from the dividend, add it to 7, then carry on: 73 / 420

On to step 2:
420 goes into 73 0 times with a remainder of 73.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 73 leaves us with 73.
Include the next digit (5) from the dividend after 73, then repeat: 735 / 420

On to step 3:
When dividing 735 by 420, we get 1 with a remainder of 315.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
If we take 420 away from 735, we end up with 315.
Include the next digit (1) from the dividend after 315, then repeat: 3151 / 420

Moving on to step 4:
3151 divided by 420 is 7 with a remainder of 211.
Put 7 as the next digit of the answer. 
Result so far: 17.0
Subtract 2940 from 3151 to get 211.
Take the next digit (1) from the dividend and append it to 211, then repeat: 2111 / 420

Going ahead to step 5:
The number 420 fits into 2111 5 times, leaving a remainder of 11.
Use 5 as the next digit of our solution. 
Result so far: 175.0
Subtract 2100 from 2111 to get 11.
Include the next digit (2) from the dividend after 11, then repeat: 112 / 420

Let's proceed to step 6:
420 can be fit into 112 0 times, resulting in a remainder of 112.
Record the quotient 0 as the next digit in the result. 
Result so far: 1750.0
Subtract 0 from 112 to get 112.
Take the next digit (8) from the dividend and append it to 112, then repeat: 1128 / 420

Moving on to step 7:
The number 420 fits into 1128 2 times, leaving a remainder of 288.
The next digit of our result is 2. 
Result so far: 17502.0
Subtracting 840 from 1128 leaves us with 288.
Bring next digit (6) of the dividend behind the 288 and repeat the process: 2886 / 420

Advancing to step 8:
2886 divided by 420 is 6 with a remainder of 366.
The next digit of our result is 6. 
Result so far: 175026.0
If we subtract 2520 from 2886, we get 366.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3660, and continue the process.

Let's proceed to step 9:
When dividing 3660 by 420, we get 8 with a remainder of 300.
The number 8 becomes the next digit in our result. 
Result so far: 175026.8
Deduct 3360 from 3660 and we're left 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.

Let's proceed to step 10:
The number 420 fits into 3000 7 times, leaving a remainder of 60.
The next digit of our result is 7. 
Result so far: 175026.87
Deduct 2940 from 3000 and we're left 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.

Step 11:
When dividing 600 by 420, we get 1 with a remainder of 180.
The next digit of our result is 1. 
Result so far: 175026.871
Subtract 420 from 600 to get 180.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1800, and continue the process.

Advancing to step 12:
420 goes into 1800 4 times with a remainder of 120.
The number 4 becomes the next digit in our result. 
Result so far: 175026.8714
Deduct 1680 from 1800 and we're left 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 13:
The number 420 fits into 1200 2 times, leaving a remainder of 360.
Use 2 as the next digit of our solution. 
Result so far: 175026.87142
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.

Going ahead to step 14:
When dividing 3600 by 420, we get 8 with a remainder of 240.
Write down 8 as next digit of the result. 
Result so far: 175026.871428
The remainder is 240 after subtracting 3360 from 3600.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2400, and continue the process.

Advancing to step 15:
420 goes into 2400 5 times with a remainder of 300.
Put 5 as the next digit of the answer. 
Result so far: 175026.8714285
If we subtract 2100 from 2400, we get 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 16:
When dividing 3000 by 420, we get 7 with a remainder of 60.
Record the quotient 7 as the next digit in the result. 
Result so far: 175026.87142857
If we subtract 2940 from 3000, we get 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

In conclusion, the division gives 175026.87142857 with a balance of 6e-08.