Let's break down the expression step by step:

1. Calculate \(24 \times 40\):
\[
24 \times 40 = 960
\]

2. Calculate \(40 \times 8 \times 4\):
\[
40 \times 8 = 320
\]
\[
320 \times 4 = 1280
\]

3. Calculate \(34 \times 80\):
\[
34 \times 80 = 2720
\]

Now, add all the results together:
\[
960 + 1280 + 2720
\]

First, add \(960\) and \(1280\):
\[
960 + 1280 = 2240
\]

Then, add \(2240\) and \(2720\):
\[
2240 + 2720 = 4960
\]

So, the final result is:
\[
24 \times 40 + 40 \times 8 \times 4 + 34 \times 80 = 4960
\]