100M, a hundred million, hundred million, 100 million
Mnemonic
[y-] Yoshi is in the [4] bathroom of the [-_] house where he finds 亻 Slenderman立 guarding the contents of the bathtub. Yoshi peaks behind and sees that there are 億 one hundred million minuscule 心 hearts, each the size of a grain of salt, in the bathtub. All of the 億 one hundred million miniature 心 hearts are illuminated by a miniature 日 sun that shines above them.