Yicheng and Bella's expanded notation

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Across
  1. 1. 60000+4000+400+3=
  2. 3. 9000+30+6=
  3. 6. 8000+700+60+5=
  4. 7. 5000000+600000+70000+8000+400+90+7=
  5. 9. 100+20+3=
Down
  1. 2. 4000000+400000+30000+5000+50+3=
  2. 4. 40000+5000+600+70+8=
  3. 5. 200+50+4=
  4. 6. 800+70+1=
  5. 8. 80000+700+30+1=