Please help with this chart! Thank you!

2. For each case calculate S2's share, the marital deduction, and the taxable estate on the assumption that Si's estate was left 75% to 52 and 25% to Si's children. The year shown is the year S1 died. Marital Deduction taxable Estate year s1's net Estate s2's share 1940 $800,000 (1960 $800,000 (1980 $400,000 1980 *$200,000 2015 $6,000,000 *S1's % of the community property