C :

#include<stdio.h>
#include<stdlib.h>
#include<string.h>
#include<ctype.h>
#include<math.h>
char x[240];
long long y,a[1001];
int main(){
	scanf("%s",&x);
	scanf("%lld",&y);
	int i,k = 0;  
	for(i=strlen(x)-1;i>=0;i--) a[k++] = (x[i]-'0')*y;
	for(i=0;i<k;i++){
		a[i+1] = a[i+1] +  a[i]/10;
		a[i] = a[i]%10;
	} 
	k = 1000;
	for(i=1000;i>=0;i--){
		if(a[i]!=0){
			k = i;
			break;
		}
	}
	if(k==1000) {
		printf("%d",0);
		return 0;
	}
	for(i=k;i>=0;i--){
		printf("%d",a[i]);
	}
	return 0;
}

Python :

print(int(input())*int(input()))