巧算题目在下面求~10800/45,125*640*25*7,7200/(90/27),24000/125/16,18000/72,2000/280*7,1540/91*13,(56*57*34)/(28*19*17),875/125.

问题描述:

巧算题目在下面求~
10800/45,125*640*25*7,7200/(90/27),24000/125/16,18000/72,2000/280*7,1540/91*13,(56*57*34)/(28*19*17),875/125.