1)45*13=585

2)585-520=65

3)16*15=240

4)184:8=23

5)240-23=217

6)217-65=152

 1)      45               2) 585    3)    16               4) 184|8            5) 240    6)    216

         *13                  -520          *15                     16  |23           -   24          -   65

__________         _____    ________        ______            ______       ______

        135                      65            80                       24                    216            151

        45                                      16                          24

__________                        __________        ______

         585                                   240                            0