453419 ÷ 87 
Let's see how many times 87 fits into 453419.

Step 1:
The number 87 fits into 4 0 times, leaving a remainder of 4.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 4, we end up with 4.
Append the next digit (5) from the dividend to 4 and continue with: 45 / 87

Advancing to step 2:
87 goes into 45 0 times with a remainder of 45.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 45 after subtracting 0 from 45.
Fetch the next digit (3) from the dividend, attach it to 45 and continue: 453 / 87

Moving on to step 3:
453 divided by 87 is 5 with a remainder of 18.
The next digit of our result is 5. 
Result so far: 5.0
Subtracting 435 from 453 leaves us with 18.
Fetch the next digit (4) from the dividend, attach it to 18 and continue: 184 / 87

Step 4:
87 can be fit into 184 2 times, resulting in a remainder of 10.
The number 2 becomes the next digit in our result. 
Result so far: 52.0
If we take 174 away from 184, we end up with 10.
Grab the next digit (1) from the dividend, add it to 10, then carry on: 101 / 87

On to step 5:
87 can be fit into 101 1 times, resulting in a remainder of 14.
The next digit of our result is 1. 
Result so far: 521.0
Subtract 87 from 101 to get 14.
Take the next digit (9) from the dividend and append it to 14, then repeat: 149 / 87

Let's proceed to step 6:
The number 87 fits into 149 1 times, leaving a remainder of 62.
Write down 1 as next digit of the result. 
Result so far: 5211.0
Subtracting 87 from 149 leaves us with 62.
Since there are no more digits in the dividend, we add a zero to the remainder making it 620, and continue the process.

Moving on to step 7:
The number 87 fits into 620 7 times, leaving a remainder of 11.
Put 7 as the next digit of the answer. 
Result so far: 5211.7
If we take 609 away from 620, we end up with 11.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

Let's proceed to step 8:
If we divide 110 by 87, we get 1 and a remainder of 23.
Put 1 as the next digit of the answer. 
Result so far: 5211.71
If we subtract 87 from 110, we get 23.
Since there are no more digits in the dividend, we add a zero to the remainder making it 230, and continue the process.

On to step 9:
The number 87 fits into 230 2 times, leaving a remainder of 56.
The number 2 becomes the next digit in our result. 
Result so far: 5211.712
The remainder is 56 after subtracting 174 from 230.
Since there are no more digits in the dividend, we add a zero to the remainder making it 560, and continue the process.

Moving on to step 10:
87 can be fit into 560 6 times, resulting in a remainder of 38.
Use 6 as the next digit of our solution. 
Result so far: 5211.7126
If we take 522 away from 560, we end up with 38.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

Advancing to step 11:
87 can be fit into 380 4 times, resulting in a remainder of 32.
The number 4 becomes the next digit in our result. 
Result so far: 5211.71264
If we take 348 away from 380, we end up with 32.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

Step 12:
87 goes into 320 3 times with a remainder of 59.
Put 3 as the next digit of the answer. 
Result so far: 5211.712643
The remainder is 59 after subtracting 261 from 320.
Since there are no more digits in the dividend, we add a zero to the remainder making it 590, and continue the process.

On to step 13:
If we divide 590 by 87, we get 6 and a remainder of 68.
Use 6 as the next digit of our solution. 
Result so far: 5211.7126436
If we subtract 522 from 590, we get 68.
Since there are no more digits in the dividend, we add a zero to the remainder making it 680, and continue the process.

Moving on to step 14:
87 goes into 680 7 times with a remainder of 71.
Put 7 as the next digit of the answer. 
Result so far: 5211.71264367
Subtract 609 from 680 to get 71.
Since there are no more digits in the dividend, we add a zero to the remainder making it 710, and continue the process.

The final result is 5211.71264367 with a remainder of 7.1e-08.