7.84%/12
=784/10000 x 【1/12】
=784/【10000x12 】
=【800-16】/【10000x12 】
=800/【10000x12 】-16/【10000x12 】
=8/【100x12 】- 4/【10000x3 】
=2/【100x3】- 1/【2500x3 】
=1/【50x3】- 1/【2500x3 】
=1/150 - 1/7500
=1*50 /150*50 - 1/7500
=49/7500