690121 divided by 40 
We want to figure out the number of times 690121 can be divided by 40.

Step 1:
40 goes into 6 0 times with a remainder of 6.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 6 and we're left with 6.
Grab the next digit (9) from the dividend, add it to 6, then carry on: 69 / 40

Step 2:
The number 40 fits into 69 1 times, leaving a remainder of 29.
Use 1 as the next digit of our solution. 
Result so far: 1.0
The remainder is 29 after subtracting 40 from 69.
Append the next digit (0) from the dividend to 29 and continue with: 290 / 40

Step 3:
The number 40 fits into 290 7 times, leaving a remainder of 10.
Put 7 as the next digit of the answer. 
Result so far: 17.0
If we subtract 280 from 290, we get 10.
Fetch the next digit (1) from the dividend, attach it to 10 and continue: 101 / 40

Let's proceed to step 4:
If we divide 101 by 40, we get 2 and a remainder of 21.
The number 2 becomes the next digit in our result. 
Result so far: 172.0
Subtract 80 from 101 to get 21.
Bring next digit (2) of the dividend behind the 21 and repeat the process: 212 / 40

Moving on to step 5:
212 divided by 40 is 5 with a remainder of 12.
Write down 5 as next digit of the result. 
Result so far: 1725.0
Subtract 200 from 212 to get 12.
Include the next digit (1) from the dividend after 12, then repeat: 121 / 40

On to step 6:
121 divided by 40 is 3 with a remainder of 1.
The next digit of our result is 3. 
Result so far: 17253.0
Subtract 120 from 121 to get 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Let's proceed to step 7:
40 can be fit into 10 0 times, resulting in a remainder of 10.
Write down 0 as next digit of the result. 
Result so far: 17253.0
The remainder is 10 after subtracting 0 from 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Let's proceed to step 8:
40 goes into 100 2 times with a remainder of 20.
Put 2 as the next digit of the answer. 
Result so far: 17253.02
Subtract 80 from 100 to get 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Moving on to step 9:
40 goes into 200 5 times with a remainder of 0.
Use 5 as the next digit of our solution. 
Result so far: 17253.025
Subtracting 200 from 200 leaves us with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Advancing to step 10:
40 can be fit into 0 0 times, resulting in a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 17253.025
The remainder is 0 after subtracting 0 from 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

On to step 11:
40 can be fit into 0 0 times, resulting in a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 17253.025
Subtracting 0 from 0 leaves us with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Our division results in 17253.025 with a remaining 0.0.