import java.util.Arrays; import java.util.Scanner; class Main { public static void main(String[] args) { new Main().run(); } final long MOD=(long)1e9+7; long ADD(long...a) { long ret=0; for(long v:a)ret=(ret+v)%MOD; return ret; } int[] f(char[] a) { int[] ret=new int[a.length]; for(int i=0;i=0;--i) { a[i]+=carry; carry=0; if(a[i]<0) { a[i]+=10; carry=-1; } } System.out.println((solve(b)-solve(a)+MOD)%MOD); } static void tr(Object... objects) { System.out.println(Arrays.deepToString(objects)); } }