Write the following numbers in the expanded forms:
279404, 3006194, 2806196, 120719, 20068

Explanation

To write the given numbers in expanded form, we will break down each number based on the place value of each digit. The expanded form expresses a number as the sum of each digit multiplied by its place value (which is a power of 10).

### Step-by-Step Solution:

1. **For the number 279404:**
- The digit '2' is in the hundred-thousands place: \(2 \times 10^5\)
- The digit '7' is in the ten-thousands place: \(7 \times 10^4\)
- The digit '9' is in the thousands place: \(9 \times 10^3\)
...