83641987 divided by 586 
We want to figure out the number of times 83641987 can be divided by 586.

Moving on to step 1:
If we divide 8 by 586, we get 0 and a remainder of 8.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 8 to get 8.
Include the next digit (3) from the dividend after 8, then repeat: 83 / 586

Advancing to step 2:
When dividing 83 by 586, we get 0 with a remainder of 83.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 83 and we're left with 83.
Include the next digit (6) from the dividend after 83, then repeat: 836 / 586

Advancing to step 3:
836 divided by 586 is 1 with a remainder of 250.
Write down 1 as next digit of the result. 
Result so far: 1.0
If we subtract 586 from 836, we get 250.
Fetch the next digit (4) from the dividend, attach it to 250 and continue: 2504 / 586

Step 4:
2504 divided by 586 is 4 with a remainder of 160.
Put 4 as the next digit of the answer. 
Result so far: 14.0
Deduct 2344 from 2504 and we're left with 160.
Take the next digit (1) from the dividend and append it to 160, then repeat: 1601 / 586

On to step 5:
586 can be fit into 1601 2 times, resulting in a remainder of 429.
Use 2 as the next digit of our solution. 
Result so far: 142.0
Subtract 1172 from 1601 to get 429.
Take the next digit (9) from the dividend and append it to 429, then repeat: 4299 / 586

On to step 6:
586 goes into 4299 7 times with a remainder of 197.
The next digit of our result is 7. 
Result so far: 1427.0
Subtract 4102 from 4299 to get 197.
Fetch the next digit (8) from the dividend, attach it to 197 and continue: 1978 / 586

Step 7:
1978 divided by 586 is 3 with a remainder of 220.
Record the quotient 3 as the next digit in the result. 
Result so far: 14273.0
Subtract 1758 from 1978 to get 220.
Take the next digit (7) from the dividend and append it to 220, then repeat: 2207 / 586

Step 8:
When dividing 2207 by 586, we get 3 with a remainder of 449.
Record the quotient 3 as the next digit in the result. 
Result so far: 142733.0
Subtract 1758 from 2207 to get 449.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4490, and continue the process.

On to step 9:
586 can be fit into 4490 7 times, resulting in a remainder of 388.
Write down 7 as next digit of the result. 
Result so far: 142733.7
Deduct 4102 from 4490 and we're left with 388.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3880, and continue the process.

Step 10:
The number 586 fits into 3880 6 times, leaving a remainder of 364.
Put 6 as the next digit of the answer. 
Result so far: 142733.76
Subtract 3516 from 3880 to get 364.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3640, and continue the process.

Let's proceed to step 11:
When dividing 3640 by 586, we get 6 with a remainder of 124.
Use 6 as the next digit of our solution. 
Result so far: 142733.766
If we subtract 3516 from 3640, we get 124.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1240, and continue the process.

The final result is 142733.766 with a remainder of 0.0124.