Final answer:
Yonge Street in Toronto, Ontario is now 1896.24 km long and initially it was 54.71 km long. Yonge Street is 1841.53 km longer now than it was at first.
Step-by-step explanation:
To determine how much longer Yonge Street is now than it was initially, we subtract the initial length from the current length.
Length difference = Current Length - Initial Length
Length difference = 1896.24 km - 54.71 km
Length difference = 1841.53 km
Therefore, Yonge Street is 1841.53 km longer now than it was initially.