1.25/30

The expression 1.25/30 simplifies to approximately 0.0417.

To calculate 1.25 divided by 30, follow these steps:

1. Write down the division expression: 1.25 ÷ 30.
2. Since there is a decimal in 1.25, it is a decimal division.
3. Move the decimal point in the dividend (1.25) two places to the right to make it a whole number: 125.
4. Perform the division: 125 ÷ 30 = 4.166666...
5. Since this is a recurring decimal, you can round the result to a desired number of decimal places or terminate it after a certain number of decimal places depending on your requirements.
For example, rounding it to two decimal places, the result is approximately 4.17.

Therefore, 1.25 divided by 30 is approximately 4.17 or simply 4.17 when rounded to two decimal places.

To calculate 1.25 divided by 30, you need to divide 1.25 by 30.

To do this manually, you can follow these steps:

1. Set up the long division problem. Write 1.25 as the dividend and 30 as the divisor.
```
0.0416
-------------
30 | 1.25
```

2. Start dividing. Begin by dividing the first digit of the dividend (1) by the divisor (30). Since 1 is less than 30, the first digit of the quotient will be 0.
```
0.0416
-------------
30 | 1.25
-0
```

3. Bring down the next digit. Bring down the decimal point, and then bring down the next digit from the dividend (2).
```
0.0416
-------------
30 | 1.25
-0
25
```

4. Continue dividing. Divide the new dividend (25) by the divisor (30). Again, as 25 is less than 30, the next digit of the quotient will be 0.
```
0.0416
-------------
30 | 1.25
-0
25
-0
```

5. Bring down the next digit. Bring down the next digit from the dividend (0).
```
0.0416
-------------
30 | 1.25
-0
25
-0
0
```

6. Add a decimal point. Add a decimal point to the quotient, directly above the decimal point in the dividend.
```
0.0416
-------------
30 | 1.25
-0
25
-0
0
```

7. Complete the dividing process. Add zeros after the decimal point in the dividend, and continue dividing until you reach the desired level of accuracy. Carry out the division until you obtain the accuracy required.
```
0.0416
-------------
30 | 1.25
-0
25
-0
0
25
-0
0
25
-0
0
25
-0
1
```

8. Obtain the final quotient. The final quotient is 0.0416 (rounded to 4 decimal places).