The largest Slovenian cities in terms of population are Ljubljana, Maribor, Celje and Kranj. Ljubljana has a population of 272,000, Maribor 95,000, Celje 38,000 and Kranj 37,000. Answer these questions:
By how much is the population of Ljubljana higher than Kranj?
By how much is the population of Maribor higher than Celje?
By how much is the population of Celje smaller than Ljubljana?
By how much is the population of Kranj lower than Maribor?