Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 018133a8e54100d8f5e6d6f493345aa88dfda4e819d4e021f8e3eedecab637b5:13:8
   |
13 |         let f1 = fee * I1B2sqr / scale * I2B1sqr / scale - I1B2;
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^