<｜begin▁of▁sentence｜>### Instruction:
Given a list of numbers [3, 5, 7, 9] and a single number 11, how can you use the `RunningMean` class with its `add_many` method to compute and display the current running mean after adding these numbers to the calculation?
### Response:
from RunningMean import RunningMean

# Creating an instance of RunningMean
current_mean = RunningMean()

# Adding multiple values at once using add_many()
values_to_add = [3, 5, 7, 9]
current_mean.add_many(values_to_add)

# Alternatively using << operator as an alias to add_many()
current_mean << 11

# Display the current running mean
print('Current running mean:', current_mean())
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