{"pre_text": ["n o t e s t o t h e c o n s o l i d a t e d f i n a n c i a l s t a t e m e n t s 2013 ( continued ) ace limited and subsidiaries the weighted-average remaining contractual term was 5.7 years for the stock options outstanding and 4.3 years for the stock options exercisable at december 31 , 2010 .", "the total intrinsic value was $ 184 million for stock options outstanding and $ 124 million for stock options exercisable at december 31 , 2010 .", "the weighted-average fair value for the stock options granted for the years ended december 31 , 2010 , 2009 , and 2008 , was $ 12.09 , $ 12.95 , and $ 17.60 , respectively .", "the total intrinsic value for stock options exercised during the years ended december 31 , 2010 , 2009 , and 2008 , was $ 22 million , $ 12 mil- lion , and $ 54 million , respectively .", "the amount of cash received during the year ended december 31 , 2010 , from the exercise of stock options was $ 53 million .", "restricted stock and restricted stock units the company 2019s 2004 ltip provides for grants of restricted stock and restricted stock units with a 4-year vesting period , based on a graded vesting schedule .", "the company also grants restricted stock awards to non-management directors which vest at the following year 2019s annual general meeting .", "the restricted stock is granted at market close price on the date of grant .", "each restricted stock unit represents the company 2019s obligation to deliver to the holder one common share upon vesting .", "included in the company 2019s share-based compensation expense for the year ended december 31 , 2010 , is a portion of the cost related to the unvested restricted stock granted in the years 2006 2013 2010 .", "the following table presents a roll-forward of the company 2019s restricted stock for the years ended december 31 , 2010 , 2009 , and 2008 .", "included in the roll-forward below are 36248 and 38154 restricted stock awards that were granted to non-management directors during 2010 and 2009 , respectively .", "number of restricted stock weighted-average grant-date fair ."], "post_text": ["during 2010 , the company awarded 326091 restricted stock units to officers of the company and its subsidiaries with a weighted-average grant date fair value of $ 50.36 .", "during 2009 , 333104 restricted stock units , with a weighted-average grant date fair value of $ 38.75 , were awarded to officers of the company and its subsidiaries .", "during 2008 , 223588 restricted stock units , with a weighted-average grant date fair value of $ 59.93 , were awarded to officers of the company and its subsidiaries .", "at december 31 , 2010 , the number of unvested restricted stock units was 636758 .", "prior to 2009 , the company granted restricted stock units with a 1-year vesting period to non-management directors .", "delivery of common shares on account of these restricted stock units to non-management directors is deferred until six months after the date of the non-management directors 2019 termination from the board .", "during 2008 , 40362 restricted stock units were awarded to non-management directors .", "at december 31 , 2010 , the number of deferred restricted stock units was 230451 .", "the espp gives participating employees the right to purchase common shares through payroll deductions during consecutive 201csubscription periods 201d at a purchase price of 85 percent of the fair value of a common share on the exercise date .", "annual purchases by participants are limited to the number of whole shares that can be purchased by an amount equal to ten percent ."], "table": [["", "number of restricted stock", "weighted-average grant-date fair value"], ["unvested restricted stock december 31 2007", "3821707", "$ 53.12"], ["granted", "1836532", "$ 59.84"], ["vested and issued", "-1403826 ( 1403826 )", "$ 50.96"], ["forfeited", "-371183 ( 371183 )", "$ 53.75"], ["unvested restricted stock december 31 2008", "3883230", "$ 57.01"], ["granted", "2603344", "$ 39.05"], ["vested and issued", "-1447676 ( 1447676 )", "$ 54.85"], ["forfeited", "-165469 ( 165469 )", "$ 51.45"], ["unvested restricted stock december 31 2009", "4873429", "$ 48.25"], ["granted", "2461076", "$ 51.09"], ["vested and issued", "-1771423 ( 1771423 )", "$ 50.79"], ["forfeited", "-257350 ( 257350 )", "$ 47.93"], ["unvested restricted stock december 31 2010", "5305732", "$ 48.74"]], "table_ori": [["", "Number of Restricted Stock", "Weighted-Average Grant-Date Fair Value"], ["Unvested restricted stock, December 31, 2007", "3,821,707", "$53.12"], ["Granted", "1,836,532", "$59.84"], ["Vested and issued", "(1,403,826)", "$50.96"], ["Forfeited", "(371,183)", "$53.75"], ["Unvested restricted stock, December 31, 2008", "3,883,230", "$57.01"], ["Granted", "2,603,344", "$39.05"], ["Vested and issued", "(1,447,676)", "$54.85"], ["Forfeited", "(165,469)", "$51.45"], ["Unvested restricted stock, December 31, 2009", "4,873,429", "$48.25"], ["Granted", "2,461,076", "$51.09"], ["Vested and issued", "(1,771,423)", "$50.79"], ["Forfeited", "(257,350)", "$47.93"], ["Unvested restricted stock, December 31, 2010", "5,305,732", "$48.74"]]}

Question: what is the net change in the number of unvested restricted stock in 2010?
Evidence:
table_9: the unvested restricted stock december 31 2009 of number of restricted stock is 4873429 ; the unvested restricted stock december 31 2009 of weighted-average grant-date fair value is $ 48.25 ;
table_13: the unvested restricted stock december 31 2010 of number of restricted stock is 5305732 ; the unvested restricted stock december 31 2010 of weighted-average grant-date fair value is $ 48.74 ;
Program: subtract(5305732, 4873429)
Answer:
str_answer: 432303
exe_answer: 432303