434154 ÷ 87 
We want to divide 434154 by 87.

Step 1:
The number 87 fits into 4 0 times, leaving a remainder of 4.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 4 and we're left with 4.
Grab the next digit (3) from the dividend, add it to 4, then carry on: 43 / 87

Advancing to step 2:
87 goes into 43 0 times with a remainder of 43.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 43 to get 43.
Fetch the next digit (4) from the dividend, attach it to 43 and continue: 434 / 87

Going ahead to step 3:
87 goes into 434 4 times with a remainder of 86.
The next digit of our result is 4. 
Result so far: 4.0
The remainder is 86 after subtracting 348 from 434.
Include the next digit (1) from the dividend after 86, then repeat: 861 / 87

Advancing to step 4:
87 goes into 861 9 times with a remainder of 78.
Write down 9 as next digit of the result. 
Result so far: 49.0
Deduct 783 from 861 and we're left with 78.
Grab the next digit (5) from the dividend, add it to 78, then carry on: 785 / 87

Going ahead to step 5:
If we divide 785 by 87, we get 9 and a remainder of 2.
The number 9 becomes the next digit in our result. 
Result so far: 499.0
If we subtract 783 from 785, we get 2.
Include the next digit (4) from the dividend after 2, then repeat: 24 / 87

Let's proceed to step 6:
The number 87 fits into 24 0 times, leaving a remainder of 24.
Record the quotient 0 as the next digit in the result. 
Result so far: 4990.0
Deduct 0 from 24 and we're left with 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Advancing to step 7:
The number 87 fits into 240 2 times, leaving a remainder of 66.
The number 2 becomes the next digit in our result. 
Result so far: 4990.2
The remainder is 66 after subtracting 174 from 240.
Since there are no more digits in the dividend, we add a zero to the remainder making it 660, and continue the process.

Advancing to step 8:
The number 87 fits into 660 7 times, leaving a remainder of 51.
The next digit of our result is 7. 
Result so far: 4990.27
If we take 609 away from 660, we end up with 51.
Since there are no more digits in the dividend, we add a zero to the remainder making it 510, and continue the process.

On to step 9:
510 divided by 87 is 5 with a remainder of 75.
Write down 5 as next digit of the result. 
Result so far: 4990.275
Deduct 435 from 510 and we're left with 75.
Since there are no more digits in the dividend, we add a zero to the remainder making it 750, and continue the process.

Let's proceed to step 10:
When dividing 750 by 87, we get 8 with a remainder of 54.
Record the quotient 8 as the next digit in the result. 
Result so far: 4990.2758
Subtracting 696 from 750 leaves us with 54.
Since there are no more digits in the dividend, we add a zero to the remainder making it 540, and continue the process.

Moving on to step 11:
540 divided by 87 is 6 with a remainder of 18.
Use 6 as the next digit of our solution. 
Result so far: 4990.27586
The remainder is 18 after subtracting 522 from 540.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

On to step 12:
87 can be fit into 180 2 times, resulting in a remainder of 6.
Put 2 as the next digit of the answer. 
Result so far: 4990.275862
The remainder is 6 after subtracting 174 from 180.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Moving on to step 13:
87 can be fit into 60 0 times, resulting in a remainder of 60.
Write down 0 as next digit of the result. 
Result so far: 4990.275862
If we take 0 away from 60, we end up 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 14:
600 divided by 87 is 6 with a remainder of 78.
Put 6 as the next digit of the answer. 
Result so far: 4990.27586206
Subtract 522 from 600 to get 78.
Since there are no more digits in the dividend, we add a zero to the remainder making it 780, and continue the process.

After the division, we end up with 4990.27586206 and a remainder of 7.8e-08.