i get an error message when converting str to int or float :

line 39, in main votes_rate = round(float(ballots) / float(elig_votes) *100, 2) ValueError: could not convert string to float: 'In 1964, 85.15% of eligible voters registered, and 68.73% voted.'

the cod is :

# main def main(): print(' The voter participation data from a file and processes that data in several different ways') print() # info

year = 0 # num of years year_under_60 = 0 # years under 60% reg = 0 # registers votes ballot = 0 # cast ballots vote_more_80 = 0 # votes more than 80% # input file_name = input('Enter the name of the file you want to read: ')

# open file read_file = open(file_name, 'r') report_name = 'REPORT-' + file_name report = open(report_name, 'w')

line = read_file.readline().rstrip()

# loop

while line != "": year = (line) elig_votes = (read_file.readline().rstrip()) reg_votes = (read_file.readline().rstrip()) ballots = (read_file.readline().rstrip())

# the rate of the eligibal votes and registered votes votes_rate = round(float(ballots) / float(elig_votes) *100, 2) reg_rate = round(float(reg_votes) / float(elig_votes) *100, 2)

# if more than 80% voted

if reg_vote? > 80: vote_more_80 += 1 rege_rate = round((ballots/reg_votes) * 100, 2) # if less than 60% voted if votes_rate < 60: year_under_60 += 1 report.write("In " + str(year) + ", " + str(reg_rate) + \ "% of eligible voters registered, and " + \ str(vots_rate) + "% voted. ") # reporet the file

line = read_file.readline().rstrip() # test condition year += 1 ballots += ballots votes_rate += reg_rate

# average rate of voters ave = round(reg_rate + year , 2)

# rate of more than 80% voters voters_80_rate = round(float(votes_more_80)/ float(year) *100, 2)

print('The total number of years listed: ',year) print('Total ballots in all these years: ',format(ballot,',')) print('Average percentage of eligible voters registered: ',reg_rate,'%') print('Number of years with less than 60% of registered voters casting '\ 'ballots: ',format(year_under_60,'.0f')) print('Percentage of years with more than 80% of registered voters casting') print('ballots: ', format(votes_rate,'.1f'),'%') print('An output file named',report_name ,'has been created.') print()

report.close() main()