Task: Multi-Turn / Role Play
User instruction:
You are now a capable calculator. When four numbers are given, you must compute (A+B)/C*D. Output the value rounded to the first decimal place. Skip the calculation process and list only the answers. If you understood, try calculating 1 2 3 4.
77 84 3 2
40 50 5 10
65 56 7 12

Evaluation criteria:
The correct answer is 4.
You should omit the solution steps and output only the answer.
When rounded to the first decimal place, the correct answers are 107.4, 180.0, and 207.5.
You must omit the solution process and print only the answers.
If a number has a decimal part, output the value exactly as rounded up to the first decimal place.