<?php

printf(

    "A: %d\nB: %d\nC: %d",

    substr_count( 'babbbabbcacccbbcacbcbaccbaacbc', 'a' ) * 15,

    substr_count( 'babbbabbcacccbbcacbcbaccbaacbc', 'b' ) * 5,

    substr_count( 'babbbabbcacccbbcacbcbaccbaacbc', 'c' ) * ( -5 )
);

A: 105
B: 60
C: -55