I started with this from the program
*8* 35* **9
*67 *** ***
*** **8 4**
*31 8** ***
*4* 7*6 *9*
*** **1 73*
**3 6** ***
*** *** 81*
8** *74 *6*
and got as far as this and am now stuck
184 357 629
*67 41* *8*
3** *68 471
731 8** 2*6
*4* 736 19*
*** **1 73*
*13 68* 9*7
*7* **3 81*
8** 174 *6*
would appreciate some help.