谷歌表对前行数据求和 + 常量变量

Question

I'm currently facing a problem which I cannot solve, would appreciate help.

a link to the spreadsheet

click here

now, here is the problem. I want H to be calculated by the sum of previous months(H)+ portfolio size(K8) * G of the current row. in array formula so I won't need to add the function each time I create a new row.

but if it exceeds 10,000 that it will be G(current row)*10,000.

for example:

row 4, IF(portfolio size + SUM (H2:H3)>10000,G4*10000,G4* (portfolio size(K8) + SUM (H2:H3)))

row 5, IF(portfolio size + SUM (H2:H4)>10000,G4*10000,G4* (portfolio size(K8) + SUM (H2:H4))) and so on.

would appreciate the help

Answer 1

try:

=ARRAYFORMULA(IF(A2:A="",,IF(K8+IF(A2:A="",,
 {0; MMULT(TRANSPOSE((ROW(B2:B)<=TRANSPOSE(ROW(B2:B)))*G2:G*K8), 
 SIGN(G2:G)^0)})>K8,G2:G*K8, (K8+IF(A2:A="",,
 {0; MMULT(TRANSPOSE((ROW(B2:B)<=TRANSPOSE(ROW(B2:B)))*G2:G*K8), 
 SIGN(G2:G)^0)}))*G2:G)))