75603347 ÷ 420 
Let's see how many times 420 fits into 75603347.

Moving on to step 1:
If we divide 7 by 420, we get 0 and a remainder of 7.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 7 to get 7.
Include the next digit (5) from the dividend after 7, then repeat: 75 / 420

On to step 2:
420 goes into 75 0 times with a remainder of 75.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 75 to get 75.
Include the next digit (6) from the dividend after 75, then repeat: 756 / 420

Advancing to step 3:
756 divided by 420 is 1 with a remainder of 336.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
If we subtract 420 from 756, we get 336.
Bring next digit (0) of the dividend behind the 336 and repeat the process: 3360 / 420

Let's proceed to step 4:
When dividing 3360 by 420, we get 8 with a remainder of 0.
The number 8 becomes the next digit in our result. 
Result so far: 18.0
Subtracting 3360 from 3360 leaves us with 0.
Bring next digit (3) of the dividend behind the 0 and repeat the process: 3 / 420

Going ahead to step 5:
The number 420 fits into 3 0 times, leaving a remainder of 3.
Put 0 as the next digit of the answer. 
Result so far: 180.0
If we subtract 0 from 3, we get 3.
Fetch the next digit (3) from the dividend, attach it to 3 and continue: 33 / 420

Moving on to step 6:
The number 420 fits into 33 0 times, leaving a remainder of 33.
Write down 0 as next digit of the result. 
Result so far: 1800.0
Deduct 0 from 33 and we're left with 33.
Bring next digit (4) of the dividend behind the 33 and repeat the process: 334 / 420

Step 7:
334 divided by 420 is 0 with a remainder of 334.
Use 0 as the next digit of our solution. 
Result so far: 18000.0
Subtracting 0 from 334 leaves us with 334.
Grab the next digit (7) from the dividend, add it to 334, then carry on: 3347 / 420

On to step 8:
When dividing 3347 by 420, we get 7 with a remainder of 407.
Write down 7 as next digit of the result. 
Result so far: 180007.0
The remainder is 407 after subtracting 2940 from 3347.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4070, and continue the process.

On to step 9:
The number 420 fits into 4070 9 times, leaving a remainder of 290.
Use 9 as the next digit of our solution. 
Result so far: 180007.9
The remainder is 290 after subtracting 3780 from 4070.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2900, and continue the process.

On to step 10:
420 goes into 2900 6 times with a remainder of 380.
Put 6 as the next digit of the answer. 
Result so far: 180007.96
Subtracting 2520 from 2900 leaves us 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.

Let's proceed to step 11:
420 can be fit into 3800 9 times, resulting in a remainder of 20.
The next digit of our result is 9. 
Result so far: 180007.969
If we take 3780 away from 3800, we end up with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Step 12:
The number 420 fits into 200 0 times, leaving a remainder of 200.
The number 0 becomes the next digit in our result. 
Result so far: 180007.969
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.

Going ahead to step 13:
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: 180007.96904
If we take 1680 away from 2000, we end up with 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 14:
The number 420 fits into 3200 7 times, leaving a remainder of 260.
Put 7 as the next digit of the answer. 
Result so far: 180007.969047
The remainder is 260 after subtracting 2940 from 3200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2600, and continue the process.

Going ahead to step 15:
420 goes into 2600 6 times with a remainder of 80.
The number 6 becomes the next digit in our result. 
Result so far: 180007.9690476
If we subtract 2520 from 2600, we get 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

Going ahead to step 16:
420 can be fit into 800 1 times, resulting in a remainder of 380.
The next digit of our result is 1. 
Result so far: 180007.96904761
If we take 420 away from 800, we end up 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.

The quotient of the division is 180007.96904761, and the remainder is 3.8e-07.