19987290 divided by 436 
We want to divide 19987290 by 436.

Going ahead to step 1:
If we divide 1 by 436, we get 0 and a remainder of 1.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 1, we get 1.
Take the next digit (9) from the dividend and append it to 1, then repeat: 19 / 436

Moving on to step 2:
436 can be fit into 19 0 times, resulting in a remainder of 19.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 19 and we're left with 19.
Take the next digit (9) from the dividend and append it to 19, then repeat: 199 / 436

Going ahead to step 3:
When dividing 199 by 436, we get 0 with a remainder of 199.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 199 leaves us with 199.
Append the next digit (8) from the dividend to 199 and continue with: 1998 / 436

Advancing to step 4:
The number 436 fits into 1998 4 times, leaving a remainder of 254.
Record the quotient 4 as the next digit in the result. 
Result so far: 4.0
Subtract 1744 from 1998 to get 254.
Fetch the next digit (7) from the dividend, attach it to 254 and continue: 2547 / 436

On to step 5:
2547 divided by 436 is 5 with a remainder of 367.
Put 5 as the next digit of the answer. 
Result so far: 45.0
If we take 2180 away from 2547, we end up with 367.
Fetch the next digit (2) from the dividend, attach it to 367 and continue: 3672 / 436

Advancing to step 6:
If we divide 3672 by 436, we get 8 and a remainder of 184.
Write down 8 as next digit of the result. 
Result so far: 458.0
Deduct 3488 from 3672 and we're left with 184.
Include the next digit (9) from the dividend after 184, then repeat: 1849 / 436

Step 7:
436 goes into 1849 4 times with a remainder of 105.
Use 4 as the next digit of our solution. 
Result so far: 4584.0
If we take 1744 away from 1849, we end up with 105.
Take the next digit (0) from the dividend and append it to 105, then repeat: 1050 / 436

Advancing to step 8:
1050 divided by 436 is 2 with a remainder of 178.
Use 2 as the next digit of our solution. 
Result so far: 45842.0
The remainder is 178 after subtracting 872 from 1050.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1780, and continue the process.

Going ahead to step 9:
When dividing 1780 by 436, we get 4 with a remainder of 36.
Record the quotient 4 as the next digit in the result. 
Result so far: 45842.4
Subtract 1744 from 1780 to get 36.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

Advancing to step 10:
436 goes into 360 0 times with a remainder of 360.
The number 0 becomes the next digit in our result. 
Result so far: 45842.4
Subtract 0 from 360 to get 360.
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 11:
3600 divided by 436 is 8 with a remainder of 112.
The next digit of our result is 8. 
Result so far: 45842.408
Subtracting 3488 from 3600 leaves us with 112.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1120, and continue the process.

On to step 12:
436 goes into 1120 2 times with a remainder of 248.
Use 2 as the next digit of our solution. 
Result so far: 45842.4082
The remainder is 248 after subtracting 872 from 1120.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2480, and continue the process.

Let's proceed to step 13:
The number 436 fits into 2480 5 times, leaving a remainder of 300.
Record the quotient 5 as the next digit in the result. 
Result so far: 45842.40825
Deduct 2180 from 2480 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.

Advancing to step 14:
3000 divided by 436 is 6 with a remainder of 384.
Record the quotient 6 as the next digit in the result. 
Result so far: 45842.408256
Subtracting 2616 from 3000 leaves us with 384.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3840, and continue the process.

Going ahead to step 15:
436 goes into 3840 8 times with a remainder of 352.
Record the quotient 8 as the next digit in the result. 
Result so far: 45842.4082568
Deduct 3488 from 3840 and we're left with 352.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3520, and continue the process.

On to step 16:
3520 divided by 436 is 8 with a remainder of 32.
Use 8 as the next digit of our solution. 
Result so far: 45842.40825688
If we subtract 3488 from 3520, we get 32.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

The final outcome is 45842.40825688, with a leftover of 3.2e-08.