42729789 ÷ 458 
We're looking to find how many times 458 goes into 42729789.

Step 1:
458 goes into 4 0 times with a remainder of 4.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 4 leaves us with 4.
Include the next digit (2) from the dividend after 4, then repeat: 42 / 458

Going ahead to step 2:
The number 458 fits into 42 0 times, leaving a remainder of 42.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 42 leaves us with 42.
Append the next digit (7) from the dividend to 42 and continue with: 427 / 458

Step 3:
458 goes into 427 0 times with a remainder of 427.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 427 and we're left with 427.
Take the next digit (2) from the dividend and append it to 427, then repeat: 4272 / 458

Going ahead to step 4:
The number 458 fits into 4272 9 times, leaving a remainder of 150.
Record the quotient 9 as the next digit in the result. 
Result so far: 9.0
The remainder is 150 after subtracting 4122 from 4272.
Include the next digit (9) from the dividend after 150, then repeat: 1509 / 458

Step 5:
458 can be fit into 1509 3 times, resulting in a remainder of 135.
Record the quotient 3 as the next digit in the result. 
Result so far: 93.0
The remainder is 135 after subtracting 1374 from 1509.
Bring next digit (7) of the dividend behind the 135 and repeat the process: 1357 / 458

Step 6:
When dividing 1357 by 458, we get 2 with a remainder of 441.
The next digit of our result is 2. 
Result so far: 932.0
If we subtract 916 from 1357, we get 441.
Fetch the next digit (8) from the dividend, attach it to 441 and continue: 4418 / 458

Going ahead to step 7:
The number 458 fits into 4418 9 times, leaving a remainder of 296.
Record the quotient 9 as the next digit in the result. 
Result so far: 9329.0
If we subtract 4122 from 4418, we get 296.
Append the next digit (9) from the dividend to 296 and continue with: 2969 / 458

Let's proceed to step 8:
If we divide 2969 by 458, we get 6 and a remainder of 221.
The number 6 becomes the next digit in our result. 
Result so far: 93296.0
Subtracting 2748 from 2969 leaves us with 221.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2210, and continue the process.

Moving on to step 9:
When dividing 2210 by 458, we get 4 with a remainder of 378.
Use 4 as the next digit of our solution. 
Result so far: 93296.4
Subtract 1832 from 2210 to get 378.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3780, and continue the process.

On to step 10:
If we divide 3780 by 458, we get 8 and a remainder of 116.
Put 8 as the next digit of the answer. 
Result so far: 93296.48
If we subtract 3664 from 3780, we get 116.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1160, and continue the process.

Let's proceed to step 11:
The number 458 fits into 1160 2 times, leaving a remainder of 244.
Write down 2 as next digit of the result. 
Result so far: 93296.482
Deduct 916 from 1160 and we're left with 244.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2440, and continue the process.

On to step 12:
The number 458 fits into 2440 5 times, leaving a remainder of 150.
Use 5 as the next digit of our solution. 
Result so far: 93296.4825
If we subtract 2290 from 2440, we get 150.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1500, and continue the process.

Advancing to step 13:
458 goes into 1500 3 times with a remainder of 126.
Put 3 as the next digit of the answer. 
Result so far: 93296.48253
If we take 1374 away from 1500, we end up with 126.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1260, and continue the process.

Moving on to step 14:
When dividing 1260 by 458, we get 2 with a remainder of 344.
Put 2 as the next digit of the answer. 
Result so far: 93296.482532
Subtract 916 from 1260 to get 344.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3440, and continue the process.

Step 15:
If we divide 3440 by 458, we get 7 and a remainder of 234.
The next digit of our result is 7. 
Result so far: 93296.4825327
Subtracting 3206 from 3440 leaves us with 234.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2340, and continue the process.

On to step 16:
458 can be fit into 2340 5 times, resulting in a remainder of 50.
Put 5 as the next digit of the answer. 
Result so far: 93296.48253275
Subtracting 2290 from 2340 leaves us with 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

The final outcome is 93296.48253275, with a leftover of 5e-08.