1 #include <stdio.h>
 2 unsigned long long gcd(unsigned long long a, unsigned long long b){
 3     while((a%=b) && (b%=a));
 4     return (a+b);
 5 }
 6 int main(){
 7     unsigned long long a,b;
 8     while(scanf("[%llu,%llu]",&a,&b)!=EOF){
 9         getchar();
10         printf("%llu\n",a/gcd(a,b)*b);
11     }
12     return 0;
13 }