40489129 ÷ 161 
We're looking to find how many times 161 goes into 40489129.

Advancing to step 1:
If we divide 4 by 161, we get 0 and 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.
Take the next digit (0) from the dividend and append it to 4, then repeat: 40 / 161

Advancing to step 2:
40 divided by 161 is 0 with a remainder of 40.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 40, we get 40.
Fetch the next digit (4) from the dividend, attach it to 40 and continue: 404 / 161

Step 3:
404 divided by 161 is 2 with a remainder of 82.
The number 2 becomes the next digit in our result. 
Result so far: 2.0
If we subtract 322 from 404, we get 82.
Take the next digit (8) from the dividend and append it to 82, then repeat: 828 / 161

Let's proceed to step 4:
161 goes into 828 5 times with a remainder of 23.
Write down 5 as next digit of the result. 
Result so far: 25.0
If we subtract 805 from 828, we get 23.
Append the next digit (9) from the dividend to 23 and continue with: 239 / 161

Let's proceed to step 5:
If we divide 239 by 161, we get 1 and a remainder of 78.
The number 1 becomes the next digit in our result. 
Result so far: 251.0
The remainder is 78 after subtracting 161 from 239.
Include the next digit (1) from the dividend after 78, then repeat: 781 / 161

Moving on to step 6:
161 can be fit into 781 4 times, resulting in a remainder of 137.
Use 4 as the next digit of our solution. 
Result so far: 2514.0
Subtract 644 from 781 to get 137.
Take the next digit (2) from the dividend and append it to 137, then repeat: 1372 / 161

Moving on to step 7:
161 goes into 1372 8 times with a remainder of 84.
Put 8 as the next digit of the answer. 
Result so far: 25148.0
If we take 1288 away from 1372, we end up with 84.
Take the next digit (9) from the dividend and append it to 84, then repeat: 849 / 161

Let's proceed to step 8:
161 can be fit into 849 5 times, resulting in a remainder of 44.
The number 5 becomes the next digit in our result. 
Result so far: 251485.0
If we subtract 805 from 849, we get 44.
Since there are no more digits in the dividend, we add a zero to the remainder making it 440, and continue the process.

Moving on to step 9:
The number 161 fits into 440 2 times, leaving a remainder of 118.
The number 2 becomes the next digit in our result. 
Result so far: 251485.2
Subtracting 322 from 440 leaves us with 118.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1180, and continue the process.

Advancing to step 10:
1180 divided by 161 is 7 with a remainder of 53.
The next digit of our result is 7. 
Result so far: 251485.27
Subtracting 1127 from 1180 leaves us with 53.
Since there are no more digits in the dividend, we add a zero to the remainder making it 530, and continue the process.

Going ahead to step 11:
The number 161 fits into 530 3 times, leaving a remainder of 47.
The number 3 becomes the next digit in our result. 
Result so far: 251485.273
Deduct 483 from 530 and we're left with 47.
Since there are no more digits in the dividend, we add a zero to the remainder making it 470, and continue the process.

Moving on to step 12:
470 divided by 161 is 2 with a remainder of 148.
Write down 2 as next digit of the result. 
Result so far: 251485.2732
Subtracting 322 from 470 leaves us with 148.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1480, and continue the process.

Let's proceed to step 13:
The number 161 fits into 1480 9 times, leaving a remainder of 31.
The number 9 becomes the next digit in our result. 
Result so far: 251485.27329
Subtract 1449 from 1480 to get 31.
Since there are no more digits in the dividend, we add a zero to the remainder making it 310, and continue the process.

Moving on to step 14:
161 goes into 310 1 times with a remainder of 149.
Use 1 as the next digit of our solution. 
Result so far: 251485.273291
The remainder is 149 after subtracting 161 from 310.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1490, and continue the process.

Advancing to step 15:
161 can be fit into 1490 9 times, resulting in a remainder of 41.
Record the quotient 9 as the next digit in the result. 
Result so far: 251485.2732919
The remainder is 41 after subtracting 1449 from 1490.
Since there are no more digits in the dividend, we add a zero to the remainder making it 410, and continue the process.

Advancing to step 16:
410 divided by 161 is 2 with a remainder of 88.
The next digit of our result is 2. 
Result so far: 251485.27329192
If we take 322 away from 410, we end up with 88.
Since there are no more digits in the dividend, we add a zero to the remainder making it 880, and continue the process.

In conclusion, the division gives 251485.27329192 with a balance of 8.8e-08.