Answer :

Let's solve the given problem step-by-step:

### Part (i):

We need to add the following numbers:
- 38.76
- 132.8
- 19.082

Step 1: Write down the numbers aligned by their decimal points.

```
38.760
132.800
+ 19.082
---------
```

Step 2: Add the numbers column by column from right to left.

```
38.760
132.800
+ 19.082
---------
190.642
```

The sum of 38.76, 132.8, and 19.082 is 190.642.

### Part (iii):

We need to add the following numbers:
- 19.04
- 360.8
- 0.0341

Step 1: Write down the numbers aligned by their decimal points.

```
019.0400
360.8000
+ 000.0341
---------
```

Step 2: Add the numbers column by column from right to left.

```
019.0400
360.8000
+ 000.0341
---------
379.8741
```

The sum of 19.04, 360.8, and 0.0341 is 379.8741.

### Summary:

- The sum of 38.76, 132.8, and 19.082 is 190.642.
- The sum of 19.04, 360.8, and 0.0341 is 379.8741.