
    Write a function that analyzes a sequence of transaction amounts and calculates the total sum of suspicious round-number transactions (represented by even amounts) occurring specifically in monitored banking channels (represented by even-indexed positions). The function should help identify potential fraudulent patterns by focusing only on even-amount transactions from designated monitoring channels.
    

    
def sum_even_and_even_index(arr):
    """
    Write a function that analyzes a sequence of transaction amounts and calculates the total sum of suspicious round-number transactions (represented by even amounts) occurring specifically in monitored banking channels (represented by even-indexed positions). The function should help identify potential fraudulent patterns by focusing only on even-amount transactions from designated monitoring channels.
    

    """
def sum_even_and_even_index(arr):
    """
    Write a function that analyzes a sequence of transaction amounts and calculates the total sum of suspicious round-number transactions (represented by even amounts) occurring specifically in monitored banking channels (represented by even-indexed positions). The function should help identify potential fraudulent patterns by focusing only on even-amount transactions from designated monitoring channels.
    

    """
    i = 0
    sum = 0
    for i in range(0, len(arr), 2):
        if arr[i] % 2 == 0:
            sum += arr[i]
    return sum