凑成

凑成	còu chéng	to put together / to make up (a set) / to round up (a number to a convenient multiple) / resulting in...
凑	còu	to gather together, pool or collect / to happen by chance / to move close to / to exploit an opportunity
成	Chéng	surname Cheng / short name for Chengdu 成都
成	chéng	to succeed / to finish / to complete / to accomplish / to become / to turn into / to be all right / OK! / one tenth