#include <stdio.h>
int main(){
int a,b,n;
scanf("%d %d %d", &a, &b, &n);
int root = a % b, ans = 0;
for(int i = 0; i < n; i++){
root = root * 10;
if(root >= b) {
ans = root / b;
root = root % b;
}
else ans = 0;
}
return 0;
}
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