8x1000 + 4x100 + 7x10 + 1x1 + 7x1/10

Answer 1

To solve the expression \(8 \times 1000 + 4 \times 100 + 7 \times 10 + 1 \times 1 + 7 \times \frac{1}{10}\), we will calculate each term individually:

1. \(8 \times 1000 = 8000\)
2. \(4 \times 100 = 400\)
3. \(7 \times 10 = 70\)
4. \(1 \times 1 = 1\)
5. \(7 \times \frac{1}{10} = 0.7\)

Now, we will add these results together:

\[ 8000 + 400 + 70 + 1 + 0.7 \]

First, add \(8000\) and \(400\):

\[ 8000 + 400 = 8400 \]

Next, add \(70\):

\[ 8400 + 70 = 8470 \]

Next, add \(1\):

\[ 8470 + 1 = 8471 \]

Finally, add \(0.7\):

\[ 8471 + 0.7 = 8471.7 \]

So, the final result is:

\[ \boxed{8471.7} \]