graph BT; DIV[`/`] --> ANS TOP[.] --> ANS[.] BOTTOM[.] --> ANS TOPSUM[+] --> TOP S1[5] --> TOP S2[4] --> TOP S3[.] --> TOP S3A[-] --> S3 S3B[2] --> S3 S3C[.] --> S3 S3C1[+] --> S3C S3C2[.] --> S3C S3C3[.] --> S3C S3C2A[-] --> S3C2 S3C2B[3] --> S3C2 S3C2C[6] --> S3C2 RATIODIV[`/`] --> S3C3 RATIONUM[4] --> S3C3 RATIODEN[5] --> S3C3 PROD[*] --> BOTTOM P1[3] --> BOTTOM P2[.] --> BOTTOM P3[.] --> BOTTOM P2a[-] --> P2 P2b[6] --> P2 P2c[2] --> P2 P3a[-] --> P3 P3b[2] --> P3 P3c[7] --> P3