'''You are given with Principle amount($), Interest Rate(%) and Time (years) in that order. Find Simple Interest.
Print the output up to two decimal places (Round-off if necessary).
(S.I. = P*T*R/100)
Input Description:
Three values are given to you as the input. these values correspond to Principle amount, Interest Rate and Time in that particular order.
Output Description:
Find the Simple interest and print it up to two decimal places. Round off if required.
Sample Input :
1000 2 5
Sample Output :
100.00 '''



p,r,t=map(float,input().split())
SI=(p*t*r)/100
print ('%.2f'%SI) 
