starry, 267 bytes

Result

AC

Code [DL]

     +, ` +               +    *      +*      +  +   `  +         + +  *     +*  *  +      + * +   '*   +   +*  +               +   * + '  +         + +  *     +*   *` +   +         + +  *     +*    *  `      + *  + +.  + +  '*      +*  +         + +  *     +*   * +'

Disassembly

[[:push, 0],
 [:num_in],
 [:label, 1],
 [:dup],
 [:push, 10],
 [:%],
 [:push, 1],
 [:+],
 [:push, 1],
 [:swap],
 [:label, 3],
 [:swap],
 [:push, 4],
 [:dup],
 [:*],
 [:push, 0],
 [:+],
 [:*],
 [:swap],
 [:push, 1],
 [:-],
 [:dup],
 [:jump, 3],
 [:+],
 [:rotate],
 [:rotate],
 [:+],
 [:swap],
 [:push, 10],
 [:/],
 [:dup],
 [:jump, 1],
 [:swap],
 [:push, 4],
 [:dup],
 [:*],
 [:push, 0],
 [:+],
 [:/],
 [:label, 0],
 [:dup],
 [:rotate],
 [:push, 4],
 [:dup],
 [:*],
 [:push, 0],
 [:+],
 [:%],
 [:label, 2],
 [:push, 1],
 [:-],
 [:swap],
 [:dup],
 [:num_out],
 [:swap],
 [:dup],
 [:jump, 2],
 [:+],
 [:push, 1],
 [:+],
 [:swap],
 [:push, 4],
 [:dup],
 [:*],
 [:push, 0],
 [:+],
 [:/],
 [:dup],
 [:jump, 0]]

stdin

7338156115258913132125563764564331436045810888448343001038987869474285234162877317807799524449167628

stdout

0000001111111111112222222233333333333334444444444444555555555666666666777777777788888888888888999999

stderr

strace