Simplify the following text for a Grade 7 native English-speaking person.
Original: On 8 March 2004 , Yudhoyono sent a letter asking for permission to meet the president about his ministerial authority . Megawati did not respond when she received the letter , although she invited Yudhoyono along to a cabinet meeting on 11 March 2004 .
Simplified: Yudhoyono became president on 20 October 2004 .